THE FALL OF THE BERLIN WALL (1989):

was a concrete barrier built by the German Democratic Republic (East Germany) separating it from East Germany, their existence goes from 1961 to 1989; around 5,000 people attempted to escape over the wall, It is believed that they died around some 200 people.

For the implications that the wall ended up having, it was denominated by some people like: "Wall of Shame"