It saddens me so much when I hear this. And, it's not the first time I have. So sad that young men have to be conditioned on what to do just because of their skin color. I really do hope things get better. I know that my parents age of people (70s) were around their parents talking badly about other races and then it trickles down. They learn from those they are around and don't educate themselves or try to be different.
These are good questions. Shitty that you even have to ask them though. :(