Yes.
Will their victims go to Hell forever?
Depends
Do you think it likely that some of the 2 million victims might have converted to Christianity had the Khmer not murdered them?
At the risk of appearing glib: Who's to say some of them didn't?
At the risk of appearing glib: Who's to say some of them didn't?
Perhaps some did before the Khmer murdered them, but that dodges my question. How about a yes or no?