John Demjanjuk (born Ivan Mykolaiovych Demjanjuk; ; 3 April 1920 – 17 March 2012) was a Ukrainian-American who served as a Trawniki man and Nazi camp guard at Sobibor extermination camp, Majdanek, and Flossenbürg. Demjanjuk became the center of global media attention in the 1980s, when he was tried and convicted after being misidentified as "Ivan the Terrible", a notoriously cruel watchman at Treblinka extermination camp. Shortly before his death, he was again tried and convicted as an accessory to 28,000 murders at Sobibor.