Luckily, those who really are a danger are easily recognized if you retain situationally aware, by their dress and manners.
I don't know why his phenomenon exists, but it is there.
Chris Rock certainly knows the difference between black people and these kinds of people.
I believe there’s a well documented case of single parent households often leading to poor outcomes for children in the areas of education, civic behavior, etc. I don’t know how you fix that.