Watch Fmovies. Giefer documents the International Vietnam Congress, which took place on February 17 and 18, 1968 in the Audimax of the Technical University of Berlin (TU). With his photographs of the counter-demonstration, which was organized on 21 February 1968 under the slogan "Berlin stands for freedom and peace" on John-F.-Kennedy-Platz in Berlin-Schöneberg, Giefer also shows the counter-movement.