During the Ezhovshchina of 1937 , Riazanov was again arrested , this time as a purported member of a " right-opportunist Trotskyist organisation . " On 21 January 1938 , following a perfunctory trial , the Military Collegium of the USSR Supreme Court condemned Riazanov to death and he was executed later that same day
Ezhovshchina
Great Purge
David Riazanov