sentences:  When Hitler came to power in 1933, Pankok was declared a degenerate artist.Subsequently, 56 of his pictures were seized from museums, some of which were included in the infamous exhibition "Entartete Kunst" (Degenerate Art), mounted by the Nazis in Munich in 1937.Following the war (from 1947 to 1958) he was a professor at the Academy of Fine Arts in Düsseldorf, where Günter Grass, Gotthard Graubner and Günther Uecker were among his students.