Members of trade unions and those perceived to be affiliated with groups that opposed the regime (religious, political, social, and otherwise), or those whose views were contradictory to the goals of the NSDAP government, were rounded up in large numbers; these included clergy of all faiths, Jehovah's Witnesses, Freemasons, Communists, and Rotary Club members.[50] According to the judgments rendered at the Nuremberg trials as well as many war crimes investigations and trials conducted since then, the SS was responsible for the majority of Nazi war crimes. In particular, it was the primary organization which carried out the Holocaust.[51]