It's the domino effect as the Berlin Wall comes tumbling down ... again

Massive colourful dominoes painted by German students were today placed along the former path of the Berlin Wall to mark the 20th anniversary of the opening of the barrier that divided the city for nearly three decades.

Many of the upright 7.5ft-high plastic foam dominoes carried messages, including 'We are one people.' The approximately 1,000 dominoes stretching for 1 mile will be toppled Monday as part of wider £5million celebrations of the wall's fall.

One labeled 'bleeding heart' showed a sword cutting through the city of Berlin, starting a crimson flow of blood speckled with crosses.

berlin domino wall

This general view shows the domino pieces leading up to the Brandenburg Gate in Berlin. As the highlight of a £5million celebration marking the 20th anniversary of the fall of the Berlin Wall they will all be toppled over

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The thousand painted 8ft dominoes will stretch along a mile and a half strip where the wall once stood which divided East and West Germany

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The row of blocks continue up to the Brandenburg Gate which is floodlit and can be seen in the background. The tumbling of the blocks should take half an hour

'Everyone has walls in their heads to a certain extent,' said Berlin resident Stefan Schueler as he perused the domino display.

'It's always a good thing if one can break them down, and I think this is a good symbol.'

Former Polish leader Lech Walesa, whose pro-democracy movement Solidarity played a key role in ending communism in Eastern Europe, is to tip the first domino Monday as the artistic display comes toppling down.

U.S. Secretary of State Hillary Rodham Clinton, Gordon Brown, French President Nicholas Sarkozy and Russian President Dimitri Medvedev also are expected to be on hand Monday for the formal commemorations of the wall's opening on Nov. 9, 1989.

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Confused East German policemen stand on the Berlin Wall in November 1989 as a demonstrator defiantly waves the West German flag

East German policemen work constructing the wall close to Checkpoint Charlie and, right, a West German policeman keeps watch as behind him East German workmen start on constructing another part of the wall

'The fall of the wall was a very big event, and I think most Berlin residents are thankful to those who made it happen,' said Berlin resident Guenter Nowak standing beside one stretch of dominoes.

German Chancellor Angela Merkel, herself a resident of East Germany when the wall fell, said in her weekly podcast today that it was a day that 'changed the lives of many people including me'.

'It is particularly nice for us to be able to celebrate this day with our European neighbours,' Merkel said. 'We Germans will not forget our neighbours and allies who made the path to German reunification possible.'

Researchers estimate that 136 people were killed while trying to cross the barrier during its 28-year existence.

On Saturday in a village outside Berlin, three new memorial stones were dedicated to victims of the wall.

One honoured Horst Kullack, a 23-year-old who was shot by border guards on Dec. 31, 1971.
For his family, the memory is still fresh in their minds.

"He was gone, disappeared," said his father, Willi Kullack. "He did not come home. It was New Year's Eve."

He said the East German secret police came to his home the following day. He asked them where his son was.

"They said: He's not going to come anymore," Kullack recalled.

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