I'm curious, how old are you if I may ask? I'm 61, and of these things, only the Holocaust and the failure of the Soviet Union were covered.
I don't think we were really taught at all about European/Asian history or the Soviet Union. I think I could have taken some classes related to those in highschool (secondary school), but for anyone working towards a non-history bachelor's degree those courses were generally not something that you could fit in your timetable.
I believe there was also one in Africa committed by Belgium in the Congo? I remember seeing some photos of something cruel from there to this effect.