He is lucky he got out of there before someone dropped him.
Rap is not something that is likely to result in a fight. However, as said prior, kids these days do not know where to draw a line. One of the kids indulged in the rap competition took matters a little too far. He uttered a line that sent the audience into fury and anger. Perhaps in his competitive spirit, he did not realize what he had said, but the crowd certainly took full notice of it and what was meant to be a peaceful competition went on to become a street fight. Luckily, the kid got out of there and the fight was broken up before anything serious could result.