Also, Hitler absolutely murdered ethnic Germans, or ARYANS, because the poster of the tweet is probably someone who uses that term unironically. The first concentration camp, Dachau, was originally built for German communists. Hitler also killed disabled persons and homosexuals regardless of ethnicity, not to mention, literally anyone who opposed him or spoke out, or even people he plain didn’t like.
The answer to this kind of shit should be “go fuck yourself and don’t ever talk to us again”. But… it’s Rachel Maddow, so…