I mean it obviously depends on a lot of factors. If you‘re white, speak fluent german and don’t tell anyone you‘re an immigrant, you get bullied less.
But generally, being black seems to be a problem. I’m not too informed about that except reading the occasional report. Having facial features usually found in islamic countries is definitely going to get you in hot water with the older folks and the uneducated.
Depending on the part of germany, you‘ll likely be met with a baseball bat (east germany).
It is normal in germany to make racist jokes and to make jokes about disabled people. The german government commissioned a recent study about this (demokratie-leben.de/…/rassistische-realitaeten-in…) and it came to the conclusion that nearly 25% of all (5000 people I think) have been victim to racism and over half have been present during racist encounters.
This and the fact that the new german nazi party just got voted in second place in the federal state of hessen should tell you most that you need to know.