Hubertus Knabe is a German historian who actively tries to point at the Communist crimes committed on German soil. He is the scientific director of the Berlin-Hohenschönhausen Memorial, a museum was once a Stasi torture prison.
In his TED talk discussion, Knabe talks in lengths about Stasi, the East German state security agency that was known for spying on its own citizens. Stasi was extremely powerful before the fall of the Berlin Wall, masterminding a system of surveillance and pressure that kept the country under control.
He studied the Stasi during their dominant era, and was spied on by them. In his TED talk, he shares details on the Stasi surveillance system, showing exactly how easy was for neighbors to spy and turn on neighbors.
He has called for anti-communism in the German society, and pointed out that social democrats were the first victims of the communist regime in East Germany.