In the early 1950s he was actively involved in uncovering human rights violations in the Soviet occupation zone such as arbitrary arrests, secret trials, and detention in labor camps.
According to a Life Magazine article dated 28 July 1952, Linse was kidnapped from outside his home on Gerichtsstraße American occupation zone of Berlin where at around 7.30am he was assaulted and bundled into a car.
Not a single agent of war-mongering imperialism will be safe, wherever he hangs out – be it West Berlin, Bonn, Paris or even Washington."
A West German police press statement, made on 13 July, identified and named four male kidnappers and 13 other accomplices who were involved in the kidnap.
It is now a significant human rights non-governmental organization specializing in supporting the rule of law across the world.