Kang Kek Iew

Kang Kek Iew or Kaing Kek Iev, also romanized as Kaing Guek Eav, nom de guerre Comrade Duch or Deuch; or Hang Pin, is a prisoner, war criminal and former leader in the Khmer Rouge movement, which ruled Democratic Kampuchea from 1975 to 1979. (Wikipedia)