It's still history. And those are still Democrats coming out to support Adolf Hitler and the Nazi party.
While this may be history and the Dems today do everything in their power to distance themselves from what the Nazis did, they still hold on to nearly all of the same principles and ideas the Nazis held. What the Nazis called Social Justice back then is the same as what Democrats believe today, only the Dems have expanded it. It's still about getting "justice" for the oppressed by punishing whomever they feel like accusing of being oppressors.
Ya know, like punishing the rich for the poor, punishing all whites for the blacks (and every other non-white race, except for Asians whom the left just kicked out of their pity party by calling them "white adjacent"). It makes no difference if anyone was actually oppressed or if anyone was actually an oppressor, the idea of forcing a divide when none exists goes back to the Nazis and even further back to Marx.