Many people think that music doesn't concern children or young people behaviour, but in my opinion, music, which has a very direct influence on them, can make their way of acting or feeling a lot different.
A few years ago, not everyone could afford paying for a CD, but nowadays, even a five-year-old child can go through the internet and download or listen to whatever he likes.
There are songs with contents that only people over eighteen should be able to listen to,  and other types of music as those which only contains drunk people in parties, drugs, violence or sex, and that almost shows those scenes on their official videos that, from my point of view, should be banned.
In conclusion, although it seems to be impossible to keep this bad influence AWAY from young people because of the abundance of communication media, this is an important topic to treat and should be taken into account.