Racial stereotyping
...or do you pass your culture by insemination?
Hitler similarly stereotyped Jews to justify the socialist "justifiable" genocide (as described by Engels); same happened for example with the Rwandan genocide, China's attacks on Tibetans, Yughurs, ...
The fact that Hitler made some generalizations that could be reasoned to be appropriate does not make the act of stereotyping any race justifiable. If your measure of what stereotyping is acceptable is tied at all to race or skin colour then you're condoning racism; I.e. a tacit admonishment of a race.
There are many on the left who selectively pick through history to drive the narrative that white is somehow evil, and hence deserves to be singled out...
...but that's a completely ill informed view of history and isn't unsupported by fact. For example: Africans were and still are the world's largest market of slave trafficking; history reveals that whites were also victims of the African slave trade -- Africa's Barbary Coast pirates enslaved over 1.3m white Europeans over 3 centuries as far north as Iceland. The slave trade didn't only become wrong when whites became the perpetrators. It's wrong on point.
There is hardly any nation that can attest to being innocent re historic atrocities; yet today the Marxists and Democrats have somehow concluded that skin colour is now a paramount determinant of "evilness" and "privilege"