First off, this was not a riot, and secondly, have rappers become the new rockstars? Performers are no longer just rapping on stage but their jumping into mosh pits and hanging from balconies. They've taken what was once a simple performance to the next level. Is it just a gimmick? Or are they reaching a different audience? Or has the culture changed?
Also, if you put people lives at risk, there is a problem. BUT... I don't think Travis Scott deserved to be arrested. Maybe just a few fines and make him liable to pay the medical bills for those who were injured. Just not arrested.