> Does he know what Hitler thought of blacks. <
In his private conversations Hitler made many disparaging remarks about blacks.
On the other hand, I once read an article about a black guy from Africa who was studying in Germany. When the war broke out, he found himself trapped there. The black guy claimed that no one bothered him. No beatings in the street by the Nazi Brownshirts, or anything like that.
He continued his studies unmolested until the war was over. Then he went back to his home country.
Bit of a surprise there, eh?
Nothing bad was done to Jesse Owen in the middle of the night, either, even though he was a threat to the Nazi narrative of racial superiority. Goebbels just said he could run and jump real good because he was a talking monkey, or something to that effect. But they let him alone to compete. This was in 1936. I think things got worse as the Nazis solidified their power.
The African might have been from one of the countries under nazi occupation, so was afforded special consideration. He couldn’t have been studying in Berlin. That was bombed into a pile of rocks. Heidelberg?