Is it "the reason"? No. But there is a popular romanticising, if you will, of the gangster lifestlye amoung the entertainment industry that is directed at black Americans. Of course that has an effect. Especially when, at least from what I see, it is over whelming in abundance.
Guys, violence and crime started with hip-hop and rap culture. Obviously.
I agree to a point though. The music industry promotes way too many negative artist and don't put out enough music that is more informed/aware/make people think.
Who is control of that though? Rich white people.