A study of the Kaiser Wilhelm Gesellschaft in the Nazi period. Ch. 3 (p. 51-72), "From Accommodation to Passive Opposition, 1933-35," discusses the dismissal of Jews from the various institutes. Max Planck tried to protect his Jewish colleagues from the Nazi authorities, but in vain. The only act of resistance undertaken by the scientists was the Fritz Haber Memorial Ceremony in 1935 (Haber, a Jewish scientist, died in Switzerland in 1934); the Nazis reluctantly allowed it to be held.