Anton Graf von Arco auf Valley
Anton von Padua Alfred Emil Hubert Georg Graf von Arco auf Valley (5 February 1897 – 29 June 1945), commonly known as Anton Arco-Valley, was a German nobleman. He assassinated the Jewish Kurt Eisner, leader of the "People's State of Bavaria", on 21 February 1919.
Aside from being a political opponent of Eisner, an allegation in some sources, such as the leftist Wikipedia, is that Arco-Valley might have decided to kill Eisner to prove himself "worthy" after he had been rejected for membership of the Thule Society, because he was partly of Jewish descent.
Other sources state nothing on a Thule Society association, instead, beside anti-Communism and anti-Semitism, describing his most important motivation as restoring the monarchy in Bavaria that Eisner had overthrown.
He was sentenced to death, but this was eventually reduced to five years in prison.
He was briefly held in "protective custody" by the National Socialist when they took power as a political opponent. A remark attributed to him that he would gladly assassinate again was interpreted as a threat to Hitler, but he was released when he promised to take no action against Hitler.
- http://www.crimemagazine.com/count-anton-graf-von-arco-auf-valley-assassin-who-sparked-rise-nazi-party Count Anton Graf von Arco auf Valley: The Assassin who Sparked the Rise of the Nazi Party