The Nazis had their day and they lost. So did the Communists. For example, the authors of The Bell Curve are well-meaning social scientists who have come up with data which they believe indicate that blacks may have something inherent in them, either biologically or culturally, which makes them intellectually less successful than whites. They bemoan that fact, actually, and hope there is something that can be done about it, but they suggest the first step towards that end is awareness of the underlying data. Well, that book caused an outpouring of outrage and attempts to censor it in the marketplace.
Some people think so.
A second and perhaps more important issue is the question of lingering German collective guilt. If so, that reaction is both unfair and shortsighted. You are no more responsible for the Nazi extermination of Jews, gypsies, the infirm, Communists, prisoners of war and the like, than I am for the calculated and massive genocide my forebears committed against the native Indian nations in the last century and the beginning of this one, or for the slavery and debasement of African Americans, the legacy of which continues as a blight on American democracy. Nor should it be forgotten that the Nazi death camps were also run with the help of many enthusiastic Poles, Ukrainians, Hungarians, Croatians, Latvians and Lithuanians, along with willing helpers among the French, Dutch, Norwegians and Italians. None of their children seem to be racked with any sense of lingering guilt.