To be fair mainly old people, but you do get the odd youngster who tries to "stereotype", lazy comments like "were you a drug dealer when you were younger?"
I think race relations in this country are relatively good, more so in the cities. I think that in the entertainment, creative and arts industry, progress is a lot more easier for black people, I guess that is more to do with having the opportunity to be self-employed. I think these industries are a lot more open and less race focused.
The corporate industries are a different kettle of fish though, How many black people do you see as chief execs of major legal or banking firms in the city? I don't for one minute think there can not be one decent candidate. Regardless of that, I don't just link Black people to this, I think this applies to people of colour or a different ethnic background.