Armed police use stun guns, rubber bullets and tear gas on angry anti-Trump demonstrators in Portland while 11 are arrested in New York as protest leaders vow to continue marching across the US all the way to Inauguration Day 

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Anti-Donald Trump protesters were confronted by riot police who used tear gas and flash bangs in Portland, Oregon, on Friday night as demonstrations continued, three nights after the billionaire was sensationally elected president.

Protesters gathered for a rally intended to be a peaceful demonstration after the previous night's unrest. Police in riot gear began by watching the event closely and eventually had a standoff with protesters who converged at an intersection and didn't move even though police told them the activity amounted to unlawful assembly.

The protest stayed peaceful for the first part of the evening but grew tense later in the evening. Police ordered a dispersion on Fourth Avenue after burning projectiles were thrown at officers.

Police arrested 11 people in New York after they marched from Washington Square Park to Trump Tower in Midtown after a day of peaceful rallies. 

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People try to move away from a gas cloud during a protest against the election of Republican Donald Trump in Portland, Oregon

Police used stun grenades, rubber bullets, and CS gas to disperse the protesters who refused to leave the area in Portland, Oregon

Protesters angry over Trump's election were involved in a standoff with police in Portland, Oregon

Protesters in Portland, Oregon faced police in riot gear Friday night during a rally intended to be a peaceful demonstration after the previous night's unrest

A demonstrator holds up cartridges during a protest against the election of Republican Donald Trump as President of the United States in Portland, Oregon on Friday

A protester stood on the street behind a line of police officers in riot gear as part of Friday's protest in Portland, Oregon

Demonstrators hold up placards during a protest against Donald Trump's US presidential election victory, at City Hall in Portland on Friday

Protesters, some of whom were wearing masks, were involved in a stand-off with police as they showed their anger following Donald Trump's election as US President

Demonstrators lined up in Portland Friday night (pictured) as they went through with their rally to protest Trump's election

The angry protest followed the election of Republican candidate Donald Trump in this week's Presidential election

Protesters had a standoff with police in Portland Friday night as they protested the election of Trump as president (pictured)

Hundreds of protesters traveled through downtown Portland streets Friday night while others converged at an intersection, not budging as police told them the activity amounted to unlawful assembly. One protester is pictured Friday

A protester angry about President-elect Donald Trump stands in front of a line of police, who used stun grenades, rubber bullets and CS gas to disperse the crowds gathered in Portland, Oregon

Police used rubber bullets, stun grenades and CS gas as a large group of protesters gathered outside City Hall in Portland, Oregon, to protests against Donald Trump's election as US president

Large numbers of police were deployed to deal with the protest in Portland, Oregon, on Friday night

One protester in Portland vowed on a sign not to 'bow down to ignorance and hatred' during Friday night's protest

Police arrested 11 people in New York after they marched from Washington Square Park to Trump Tower in Midtown after a day of peaceful rallies. One of them is pictured being arrested

Anti-Trump protesters continued marching in Manhattan on Friday evening. Some are pictured on Fifth Avenue

Thousands of people marched through Manhattan to protest against Donald Trump being President-Elect

Anti-Trump demonstrators also gathered in Chicago, Illinois Friday (pictured) to protest against Trump's election

Chicago protesters held signs supporting trans rights as they gathered Friday night and marched downtown

One demonstrator held a sign in Chicago with Trump's portrait and the word 'bigot' while marching downtown

A protester is arrested in Manhattan on Friday, where thousands of people made their feelings clear about Trump's election as President of the USA

Anti-Trump rallies entered their fourth day Friday as demonstrators across the country kept disavowing the president-elect. Pictured, a protester marches in Manhattan

In New York, protesters gathered at Trump Tower in Midtown and 1,200 rallied in Washington Square Friday afternoon. Some of them are pictured marching through Manhattan 

Anti-Trump protesters kept expressing their disagreement against the new president-elect on Friday all across the country. Demonstrators are pictured Friday marching through Manhattan

Protesters in New York marched through Manhattan Friday (pictured) to keep disavowing new president-elect Trump

Several protesters in New York had signs reading 'Not my president' as they marched through Manhattan Friday (a group is pictured crossing West 42 Street)

Clinton won the state of New York during the presidential election. Many seemed to disagree with the outcome of the election as hundreds of protesters marched in Manhattan Friday (pictured)

'Love trumps hate' was one of the slogans that appeared on protesters' signs Friday as they kept making their voices heard in New York City (pictured) and all around the country

Some in New York City's Union Square subway station took a softer approach Friday by filling a wall with messages on sticky notes (pictured). Some messages were conciliatory and expressed hope that both sides would come together

A little girl drew a heart on a sticky note during a peaceful movement Friday in New York City's Union Square station

Protesters in New York for the fourth day gathered at Trump Tower in Midtown and 1,200 rallied in Washington Square Friday afternoon.

They marched in Manhattan while carrying signs that read: 'We go high they go low', 'Love is love' and 'Not my president'.

Later that day, officers arrested 11 people as about 1,000 walked in direction of Trump Tower, the New York Daily News reported. They have been charged with disorderly conduct. 

In Miami, Florida, university students staged a peaceful march in the afternoon and hundreds began walking across the city at 6 pm. A bottle was thrown from a building while protesters were marching across the city and an 11-year-old girl was hit.

Demonstrations have been planned all the way until Inauguration Day on January 20, but protest leaders have warned their fight could continue for a long time after that.

Organizers in Portland announced on Facebook there would be a peaceful rally from 5 pm at Portland City Hall.

The rally, according to the organizers, would be a chance to discuss how to repair the damage done to the city Thursday night, when a peaceful protest of 4,000 people was disrupted and escalated into a riot.

The protest near City Hall in Portland remained peaceful early Friday evening. Riot police were at the scene and officers urged protesters to follow a designated route, KATV reported.

Portland police told motorists on Twitter not to engage with protesters if they encountered them. They were advised to stay in their vehicles, remain calm and let the protest pass.

A woman punched a man in front of police officers, disrupting the peaceful rally, OregonLive reporter Alan Brettman said on Twitter. She appeared to have been removed from the protest.

The atmosphere grew tenser later Friday evening when officers used flash bang grenades, according to Brettman. A witness said bottles were thrown.

Police then urged protesters to leave the road and get on the sidewalks. Officers pushed the crowd and asked demonstrators to move. More flash bang grenades exploded.

Portland police tweeted that protesters on Fourth Avenue had to disperse immediately or be subjected to arrest. They warned they would use tear gas if demonstrators failed to comply and reminded those on Twitter that first-aid for those sprayed with tear gas was fresh air and water.

The dispersion was ordered after burning projectiles were thrown at officers, police added. Brettman confirmed on Twitter that tear gas had been used. 

Protesters also marched in Atlanta, Georgia on Friday against the election of Trump. Some are pictured in the evening

Police told protesters to get out of the street (pictured) as they marched against the election of Trump as president Friday

Hundreds of protesters began walking at 6:20 pm in Miami, Florida (pictured). Another protest was scheduled at Miami Beach's Trump Plaza on Friday

Anti-Trump rallies took place across the nation on Friday as some protested Trump's election for the fourth night in a row. Pictured, protesters march in Miami

Hundreds of demonstrators began walking across Miami, Florida at 6 pm (some of them are pictured). Some reported that bottles had been thrown from a condo during the protest

A man wore a white 'Make American great again' hat and wrapped himself in a US flag as he attended the anti-Trump protest that saw hundreds of protesters gather in downtown Miami Friday

'She got more votes': One protester in downtown Miami reminded the crowd that Clinton won the popular vote

Protesters march in the street to demonstrate against the election of President-elect Donald Trump in Atlanta

Other protesters in Miami called Trump a 'bigot' and one held a sign reading: 'Unidos contra el odio' ('united against hate')

A Trump supporter came to the anti-Trump rally in West Palm Beach, Florida Friday holding a Trump sign with the words: 'Stop crying!) (pictured)

Hundreds of students from at least five different Minneapolis high schools walked out of class and marched Friday afternoon to protest against Trump's election and the Dakota Access Pipeline, the Star Tribune reported.

High school students also walked out of class and rallied in Iowa City Friday, KCRG wrote.

Other demonstrators and college students joined the rally and all marched to Interstate 80, blocking traffic until police dispersed the protest.

Demonstrators marched in downtown Atlanta, Georgia for the third night straight on Friday evening. A witness said on Twitter that protesters had hopped over fences trying to get on the interstate and shared a video of a US flag being burnt.

Hundreds of high school students also protested Friday in Omaha, Nebraska.

Students at the University Of Miami organized a peaceful march Friday afternoon on their Coral Gables campus.

'We are devastated by the results of the election and we, as people of color, women, LGBTQ, immigrants, minorities at this university, we're standing up and making our voices heard,' one student told WSVN.

Hundreds of protesters began walking at 6:20 pm from Bayfront Park. Another protest was scheduled to start around the same time in West Palm Beach and 300 were planning to demonstrate at Miami Beach's Trump Plaza.

A glass bottle appeared to have been thrown from a condo building during the otherwise peaceful anti-Trump protest in Miami.

An 11-year-old girl named Aaliyana Smith was hit on the leg. 'The bottom went straight onto my leg bone and then it hit the ground. And it really hurt,' Aaliyana told CBS Miami. 

A protest also took place in Fort Worth, Texas, where a Trump supporter came with a confederate flag. Police separated him from the protesters and led him away.

'Not my f****** president': One protester in Philadelphia Friday clearly disavowed the new Republican president-elect

A woman marched in Philadelphia Friday holding a sign that read: 'P***y grabs back' - a response to Trump's lewd comments about grabbing women by the p***y

Another protester in Philadelphia held a sign reading: 'F*** Trump' as demonstrators rallied in the city Friday evening

Students from at least five Minneapolis high schools walked out of class Friday afternoon and marched against Trump and the Dakota Access Pipeline. Some of them are pictured

High school students in Minneapolis were among many of their peers who staged walkouts and rallies on Friday. Some of them are pictured in Minneapolis with a sign reading #Notmyprez

The rally organized Friday by high school students in Minneapolis was meant to express their disagreement against both the election of Trump and the construction of the Dakota Access Pipeline

In Dallas, Texas, 100 people gathered for an anti-Trump protest Friday evening. Three Trump supporters were pictured by Fox4'sAlex Boyer counter-protesting with signs reading: 'You are cry babies [sic]', 'Get over it' and 'Trump won'.

A protestor smashed a Hooters window later in the evening, Boyer reported in a tweet. 

Hundreds marched in Orlando, Florida chanting phrases such as: 'Donald Trump go away. Racist, sexist, anti-gay!'

One Trump supporter showed up to the rally with a bullhorn and shouted: 'Trump's the president! Get over it!' the Orlando Sentinel wrote.

About 1,400 people gathered in Boston, Massachusetts for a 'love rally' organized in response to Trump's election, according to Patch Boston.

A Facebook page for the event describes it as a peace rally aimed at showing Muslims, women, Latinos, the LGBTQ community, disabled people, those who cannot afford healthcare and any minorities that some support and love them.

In Dallas, Texas, three Trump supporters came to an anti-Trump rally and taunted protesters with signs reading 'You are cry babies', 'Trump won' and 'Get over it' (pictured)

In Fort Worth, Texas, a small group protested outside the courthouse (pictured. One of them held a sign revamping Trump's campaign slogan, 'Make America great again', into 'Make America racist again'

Some protesters in Fort Worth urged the electoral college to honor the popular vote on Friday (pictured). Clinton won the popular vote and these protesters would like to see her elected instead of Trump

One sign in Fort Worth urged the electoral college to vote by conscience as protesters gathered at the courthouse Friday

A protest also took place in Fort Worth, Texas, where a Trump supporter came with a confederate flag (pictured). The man later said he was assaulted and police took him across the street

The Trump supporter holding a confederate flag (pictured) also held a sign reading: 'Si Trump puede!' ('Yes Trump can' in Spanish.) Police separated him from the small group outside the courthouse in Fort Worth

The crowd looked on as a Trump supporter came to the anti-Trump rally in Fort Worth Friday holding a confederate flag

Burlington, Vermont saw a peaceful protest of 200 people on Friday afternoon. Another rally was scheduled for the evening, the Burlington Free Press reported. 

Protests also carried on in Eugene, Oregon and Philadelphia, Pennsylvania. Oregon went to Clinton during the election whereas Trump won Pennsylvania.

A Los Angeles police officer meanwhile had his pistol stolen during a fight Thursday night with a woman who attacked him with his handcuffs, the Los Angeles Times reported Friday. Officers were after a group of about 20 people who had just broken off from a large anti-Trump protest.

Activists around the country are starting to prepare for what they hope will be the nation's strongest protests since the Occupy Wall Street movement.

Rallies scheduled for Saturday in New York and Los Angeles, and a protest planned for Washington on January 20, when Trump succeeds President Barack Obama, will be just the beginning, activists said in a series of interviews.

The Reverend Al Sharpton, a civil rights leader from New York, said anti-Trump protesters should borrow a page from the playbook that Republicans used to oppose Obama's policies.

That movement started organically, later developed as the Tea Party movement and eventually resulted in the election of Trump, said Sharpton, whose National Action Network plans to launch a new organizing effort at its New York headquarters on Saturday.

'We are not going to be as ugly as them, but we are going to be just as persistent,' Sharpton said. 'This is not going away.'

Protests sprung up this week in about a dozen major US cities, including Boston, Baltimore and San Francisco. Demonstrations in Portland, Oregon, and Berkeley, California, turned violent, with protesters setting fires and clashing with police.

Trump initially dismissed the crowds on Twitter, calling them 'professional protesters, incited by the media,' but later reversed course, saying he admired their 'passion.' 

Protesters also gathered in Philadelphia, Pennsylvania - a state that gave Trump 20 electoral votes during the election. One of them is pictured Friday with a 'love trumps hate' sign

One demonstrator in Philadelphia Friday brought a sign reading 'Silence is acceptance' to the anti-Trump rally

Natashia Greene with the University of Oregon Black Student Union spoke about worries for her safety since the election of Trump to the presidency during a Black Lives Matter rally at the university in Eugene, Oregon on Friday (pictured)

TJ Wells, who had volunteered to work for Democrat Hillary Clinton's failed presidential campaign, said his decision to organize a Thursday night protest at Washington's Trump International Hotel near the White House was spontaneous.

'I literally shared it with a few friends, and within a few hours I had a couple hundred people show up,' said Wells, who is 27 and lives in the Washington suburb of Bethesda, Maryland, where he works in human resources.

He said he hoped it would be the first of many such demonstrations.

'From Inauguration Day to the time he's out of office, we have to make sure that if there's something he's going to pass that the majority of Americans who voted for Hillary Clinton are not OK with, that we are forceful about that,' Wells said.

The election saw 59.5 million people vote for Trump - fewer than the 59.7 million who cast ballots for Clinton. But Trump's strong showing in swing states, including Michigan, earned him a decisive victory in the Electoral College that ultimately picks the president.

Opponents have cited Trump's history as a leader of the 'birther' movement that claimed wrongly that Obama had not been born in the United States, his promises to deport the estimated 11 million undocumented immigrants in the country and his calls to register Muslims.