The horrors of colonialism were truly bad, and same goes for Nazi Germany's atrocities in Europe.
But a thought struck me today, is Nazi rule in Europe (mainly focusing on Eastern Europe, namely Poland and the occupied territories of the USSR) "worse" than colonial rule in Africa, Southeast Asia or the Raj? (I think Africa was the worst, but I'm not sure here, could a more knowledged person help with that?)
I don't even know why you are asking that. This should be clear with small checking. Nazis of course were worse. Their only plan for Eastern Europeans was only just nearby total extermination. Europeans were pretty nasty for Africans but rarely genocidal.