you have already said you do not want to ban it Me? I haven't said that, have I?
I would draw the line in the same place the law would. Exhorting people to violence, violent specifics... the existing laws on indecency etc.
Apart from that, as I know I have said, as far as I am concerned poets, authors, song writers all explore the human condition, that is what most acts of creativity do. I may avoid, dislike, feel revulsion, but that is my reaction, not a reason to ban anything!
I know it will happen, this generation haven't had one, there will be a new Public Decency debate. It will be as loud and puritanical as every one that came before! But it won't stop such music re-emerging.
I don't think it should either!