I wouldn’t view it as uncaring, in light of how the Vietnam War had just ended. When the Rwanda genocide occurred, BJ Clinton was afraid of a Somalia repeat (with GIs’ bodies being dragged through the street) so he did nothing - and I’m not sure what he should have done (if anything).
What civilized country was going to go to war for Cambodians in 1975?
I am not saying a war should of happened over Cambodia. It was just astonishing that the amount information coming out of there of the genocide going on was greeted with that much apathy. It was only after all of the murders that the movie came out. Then all of the dimwits seemed to care. Believe me or not.