Today marks the 2oth anniversary of an event that changed the world. Ronald Reagan in his speech of June 12, 1987 challenged Mikhail Gorbachev to "Tear down this wall" - four little words termed as "unpresidential" that will later become the phrase he will be most remembered for. Two years later, the walls came down.
To celebrate the anniversary of the fall of the Berlin Wall, people crowded around individually painted dominoes along the former route of the wall. Some 1,000 giant dominoes, many of them decorated by schoolchildren, were toppled during the celebration.
