More than 130 people were killed trying to cross the border of East and West Berlin between 1961 and 1989.

It was a difficult time, not just for civilians, but also for border guards who were conflicted about their roles.

Al Jazeera's David Chater spoke with an East German guard who fled and became part of a refugee organisation that helped 350 people escape to safety in West Germany.

Source: Al Jazeera