i'm your host journalism school director rob rutger. rap music is known for having a lot of vulgarity in it. how damaging can that be? there are two sides to this issue. hale begins our coverage with a look at how some studies show how rap lyrics could have a negative effect on children and their behavior. [ music ] >> kendrick lamar is entertaining an audience in oakland with his rap music. his words would be considered obscene in the classroom or on the street. but this crowd is with him all the way. audience members here are above 21. younger crowd could be adverse reeffected according to a study in the journal of the american act of child and adolescent psychiatry. increased violence and aggressive behavior increased high risk waivers including alcohol and tobacco use and onset of sexual activities. hip hop has become one of the most popular music formats in the united states. but experts say that with popularity comes a price. the safety of children. the music is part of a culture of exhibiting violence and promoting gangs. a child