Issac Steinberg reinstated his Jewishness for convenience also!
Genrikh Yagoda Enokh Gershevich Ieguda). November 7, 1891 – March 15, 1938
Presenting Genrikh Yagoda, the head of NKVD (KGB's predecessor) in the 1930s. Prior to heading NKVD, Yagoda was in charge of building two major canals. The work successfully completed and Yagoda was lauded. Tens of thousands died during construction.
"There is a couple of documentaries about the cruelty in the construction of these canals".
So Yagoda got promoted, and got the whole country under his watch. In charge of Soviet law enforcement, he had hundreds of thousands arrested, sent to gulags, and killed. Looks like Yagoda is in the running for the title, no? So, worst Jew ever? Perhaps not! Yagoda chose to convert to Christianity before the communist takeover.
"Sens uses the conversion a cleansing him of Jewishness."