How can things like the Rwandan genocide or Indonesian killings in the 1960's actually happen?

Like even if you don't care about morality at all you would think killing two million of your labour force would cause massive economic problems. It can't even be explained by envy, because there are small minorities of rich people, sometimes these guys are just 300 or so people in a country of millions, and yt the poor don't regularly march on them and kill them.

I can't comprehend what kind of fear and hatred would make you think its a good idea to kill two million of your nation.

Overall, the proletariat has turned out to be a pretty disappointing class compared to their highest heights in early 20th century Europe.

They won a lot of rights for themselves in their own respective countries, but then completely capitulated once they got democratic "representation". This makes them completely pathetic compares to peasants or slaves and of course, makes Marx completely wrong.

I think if anyone is going to overthrow the existing order, it will be intellectuals, scholars, and the middle class. Wage workers are after all, basically mercenaries when you think about it and are incapable of self-sacrifice for a greater cause.