At any rate, please exercise caution because in their minds, you are disrespecting them by your actions, and they could get violent. I lived in a mixed race area most of my life. It is obviously not respectful and said out of dislike of you. Drug dealers and the like count on people turning their heads and being passive and not trying to get involved. You should be commended for your concern and involvement.
Most whites move from declining mixed racial areas.
Be careful, and be sure to involve professional help such as the police, say in neighborhood watch groups, etc. I have tried this many times, and I do not think this is comfortable. But among the white, black, Chicano, Asian, etc. I have recently been more aware of a style of wearing baseball-style caps off to the side rather than backwards. I don't know if these particular styles started among African-American youth.