'I kept begging him, "Sir, don't make me do this"': Victim who blew the whistle on convicted rapist cop reveals how he abused his power while patrolling her neighborhood

A 'serial rapist with a badge' who faces many years in prison for raping black women on his police beat was caught because of the courage of a grandmother who refused to remain silent after he sexually assaulted her, her lawyer said Friday.

Holtzclaw's conviction on charges including rape and sexual battery should send a strong message nationwide, said attorney Benjamin Crump, speaking for Jannie Ligons - who plans to sue the city for civil damages.

Ligons, whose complaint triggered the investigation that led to charges Daniel Holtzclaw victimized 13 women as an Oklahoma City Police officer, said: 'He just picked the wrong lady to stop that night.

'I wanted to make sure this wouldn't happen again, no way no how.' 

Scroll down for video 

Jannie Ligons, one of the victims of sexual assault by former Oklahoma City police officer Daniel Holtzclaw, spoke during a news conference in Oklahoma City, on Friday, the day after he was convicted of sex crimes 

Her attorney Benjamin Crump (seen holding up her arm) said he plans to sue the city for civil damages

'He just picked the wrong lady to stop that night,' said Ligons, whose complaint triggered the investigation

Crump added: 'Black women's lives matter. It mattered just as if this were a group of 13 white women.'

Holtzclaw was found guilty on his 29th birthday Thursday of sex crimes against eight of the women, and acquitted of charges involving five other women he encountered while on night patrol. 

Jurors recommended 263 years, including 30-year sentences for each of four first-degree rape convictions.

Ligons, a daycare worker in her 50s who was pulled over while driving home from a night with friends, said she knew she had done nothing wrong when Holtzclaw assaulted her.

Holtzclaw, 29, of Oklahoma City has been found guilty of sexually attacking at least 13 black women in the neighborhood he patrolled. He broke down in tears as the verdict was read out

His father Eric Holtzclaw (left) held his wife, Kumiko Holtzclaw (right) as the verdicts were read on Thursday

'He did things to me that I didn't think a police officer would do,' said Ligons, flanked by her family and African-American activists outside the courthouse. 

'I was out there alone and helpless, didn't know what to do.

'All I could think of was he was going to shoot me, he was going to kill me.

'I kept pleading, 'Don't make me do this, sir. Are you going to shoot me?''

'I was so afraid, so helpless.'  

Liggons said she was different from other victims in that she did not have any outstanding warrants or convictions against her. 

Prosecutors said Holtzclaw preyed on women who had trouble with the law, thinking that their word would not stand up against his, adding he became more brazen with each attack. 

Supporters of the cop's victims prayed outside the courtroom and some (not pictured) reportedly sang Happy Birthday as the verdicts were read out because the convicted officer turned 29 on Thursday

Another victim, Shardarion Hill, said she went into survival mode with Holtzclaw and was forced into doing 'what the man with the badge and gun wanted'.

The defense attacked the credibility of the women who testified against Holtzclaw, saying they were dishonest.

'Society tends not to believe black women or value them as other women are,' said Artist for Justice founder Grace Franklin, who stood in support of the 13 women.

The Oklahoma City Police Department backed the detectives who investigated Holtzclaw and the jury that convicted him.

'We are satisfied with the jury's decision and firmly believe justice was served,'  the department said in a statement.  

Investigators found other victims through records of the background checks Holtzclaw had requested, corroborated their claims through the GPS locator in his squad car. 

Holtzclaw kept nodding his head as the judge went through the 36 counts against him as his backers cried

He was fired and then jailed as other victims emerged.

Holtzclaw's case was examined as part of a yearlong Associated Press investigation that revealed about 1,000 officers nationwide had lost their licenses for sex crimes or other sexual misconduct over a six-year period.

The AP's finding is undoubtedly an undercount, since not every state has a process for banning problem officers from re-entering law enforcement, and states that do vary greatly in how they report and prosecute wrongdoers.

One factor stands out, however: Victims tend to be among society's most vulnerable — juveniles, drug addicts, and women in custody or with a criminal history.

Questions of race surrounded the trial. Holtzclaw is half-white, half-Japanese. 

All his accusers are black, but the case was heard by an all-white jury. 

Oklahoma County District Attorney David Prater said he had sought a 'good cross-section of our community,' but defense attorneys had eliminated every potential black juror.

Prater said he hopes people will see that his office and local law enforcement will stand up for any one, no matter their race or background. Activists outside the courthouse on Friday said they will closely watch Holtzclaw's sentencing to make sure.

The youngest victim, a 17-year-old girl, was the last to testify. 

She said Holtzclaw picked her up as she walked home one night in June 2014, and then walked her to the porch, where he told her he had to search her. 

She said he grabbed her breasts, then pulled down her pink shorts and raped her. 

Her DNA was found on his uniform trousers.

The jury convicted Holtzclaw of first-degree rape, second-degree rape and sexual battery in the girl's case.

Holtzclaw was convicted by an all-white jury of eight men and four women after four days of deliberations

He broke down in tears as the verdict was read and said, 'I didn't do it,' as he was led out of the courtroom in handcuffs. He faces life in prison. 

Defense attorney Scott Adams, who declined to comment, sought to use the criminal backgrounds of some of the victims to cast doubt on their testimony. He questioned several women at length about whether they were high at the time, and noted that most didn't come forward until investigators identified them.

Ultimately, the strategy failed.

One woman even testified in orange scrubs and handcuffs, because she had been jailed on drug charges hours before appearing in court, but the jury still convicted Holtzclaw of forcible oral sodomy in her case. That woman said he followed her into her bedroom and raped her, telling her, 'This is better than county jail.'

Holtzclaw, a college football star who joined law enforcement after a brief attempt at pursuing an NFL career, rocked back and forth, sobbing in his chair, as the verdicts were read. Citing the emotional outburst, authorities put him under a 24-hour watch in jail.