The Holocaust - This has got to be the most evil and vile crime against humanity ever conceived. It is no wonder that "Never Again" has become the rallying cry among the Jewish against anti-Semitism. My mother and my sister went to visit the site of one of the concentration camps, I think it was Auschwitz, last year. Even though none of my relatives are Jewish, the Holocaust is a terrible, terrible thing to have occured and I sincerely hope that nothing like this ever occurs again.
Josef Stalin (aka Josef Dugashvili - the name "Stalin" was acquired because he was reputed to have escaped from a Georgian jail, as Stalin is Russian for "steel") He was no better than that evil German who started the Holocaust. Even more died under his rule than during the Holocaust, being put into gulags (labor camps) just because they were Jews, anti-Communists and for other reasons for no man, woman or child should be killed or even jailed for.
The systematic and racist inhumane treatment of Native Americans was just as bad all across the Americas. They have been attacked and driven off the land so settlers could put down roots in stolen territory. Disease came and wiped out Native Americans in great numbers and very little was done to help them. In the Plains, entire tribes were rounded up and shot as if they were animals and not human beings. Treaties were drawn up to swindle them of land and wealth and so many were left with small reservations, like animals in wildlife preserves. In Canada, and probably the US, if a Native American chose to live outside the reservation, he or she would've lost their status as Native Americans and simply were lumped in with other ethnic minorities (who also came along with the Europeans, and well afterwards). Even today in Canada and the US, too many Native Americans are living in poverty at or near Third World levels, even to the point where they have no more acess to safe water and food than even in many Third World countries. Not to mention the discrimination, in some cases, even worse than what African-Americans and African-Canadians experience.
Cambodia, China and Rwanda, among many totalitarian regimes were also no better. Cambodia, the Khmer Rouge under Pol Pot were responsible for the infamous mountains of human skulls. Makes me wonder how sick an individual Pol Pot was. China, under Mao, was ruthless, too in pursuing its Communist China policy, having killed a lot of people who were branded as anticommunists or even decadent. Rwanda - look at how largely the tribal war between the Hutus and the Tutsis have resulted in. At least a few hundred thousand people have been killed. Almost nothing was done in intervene. NATO and the US could've prevented such a tragedy. For the UN personnel stationed there, it was too much for them to handle. A Canadian Armed Forces commander stationed there had been denouncing the ignorance by the rest of the world to this African tragedy. He became so affected by seeing the killings that he suffers from post-traumatic syndrome. He went largely unseen, until a reporter found him drunk on a park bench in Ottawa and he was vindicated in a UN report slamming the ignorance of the Rwandan crisis. An international crisis like this will no doubt affect even those not from where the tragedy has struck.
Let's not forget those who helped to defeat the Nazis and those who today work to help the victims, whether it be the UN or the Red Cross and others.