Why was the Holocaust so notorious?

by ForrieLurker

Why do so many people talk about the Holocaust, and so few about the Cambodian, Armenian genocides and the purges in Communist China and the USSR? If you think about it, the Holocaust was motivated by paranoia of a Jewish conspiracy, while the Cambodian genocide was an attempt to kill anyone who would oppose the brainwashing of children into child soldiers. Is it just because of the constant noise of Holocaust deniers, or is it just because the Holocaust was the one with the most Western involvement?

Elm11