The Berlin Wall was to prevent all citizens of East Germany from escaping East Germany by going to West Berlin. It was built in 1961, long after the Holocaust, and had nothing to do with any distinction between Jews or Non-Jews, but rather East German citizens and West German citizens.
At the time of the Berlin wall it was a bid for freedom from the communist-held East Berlin that drove many to attempt to cross the wall.. finally when the wall was pulled down by the people of West Berlin, the unification of Germany began
If people tried to cross they would get shot
Most people were afraid to challenge the Berlin Wall, because the eastern side of it had armed guards with a clear view of the wall and orders to shoot to kill. Despite this, about 100 people were killed trying to cross the wall and escape from communism into freedom.
you would be killed
The Berlin wall was resolved by a croud of people who went on for days tearing the wall down.
The Berlin Wall was patrolled by soldiers on the East German side and they had orders to fire on people trying to climb over the wall to West Berlin.
The Berlin Wall Online Website (see link below) lists 192 people as having been killed on the Berlin Wall.
No: As far as I know there was never a shot fired. But people were killed trying to cross the Berlin wall.
They wanted to see their dear ones, separated from them by the Berlin Wall.
communism
because the wall was in the city Berlin
Nobody wants a permanent barrier between former West Berlin and its environs, but people do want small parts of the Berlin Wall to remain in place as a reminder of Berlin's history.