description: Photographic documentation of Jerzy Bereś’s manifestation "Reflective Mass" (23.05.1983), taken at the Krzysztofory Gallery in Krakow. The Krzysztofory basement, it is dark. There is a table against the wall, with a bottle and glasses on it. In the background you can see Bereś’s sculpture "Flower" (1981/82). in the middle of the floor there is a newspaper. The naked artist is kneeling by it and painting the letter "u". You can see that it is the popular weekly "Polityka". Around it, on folding chairs, clockwise, the audience are sitting: Jerzy Hanusek, Bettina Bereś, Maria Pinińska-Bereś, Julian Jończyk, Marta Tarabuła, Janusz Tarabuła, Jerzy Wroński, Jerzy Kałucki, Anna Strycharska, Kazimierz Mikulski, Jonasz Stern, nn, Stanisław Balewicz, Janina Kraupe Świderska.