There seems to be a confrontation going on before the filming begins. The police seem to be telling to move away (while also moving closer to them?) and the girls seem angry and up in the cop’s shit. Then something happens (dunno if the girl in black does something, it’s so fast) and the police shoves them. Then they really got up in the cop’s shit and some even seem to punch him. Then all hell breaks loose and the batons come out and it just turns into a melee.

Dunno what happened prior for the girls to be like that and what’s got the cop angry too