Well, based on the report that I read, they analyzed certain shows on BET and MTV, breaking down the instances of violence, drug use,
sex, and how many times each curse word is said in that given period of time.
After all the research that was done, it was concluded that every 38 seconds a child is exposed to some sort of negative view from music videos on these two channels.
They also concluded that billion dollar companies advertise on these two channels and that if all their sponsorship is pulled, these shows cannot live.