Been to quite a few games overseas and what is very different to here is that foreign police use drug detection dogs near turnstiles. I haven't seen too much cocaine use by fans myself but have been next to fans who want to fight but weren't drunk, with glazed eyes. With these types it is always really minor things that set them off. Does cocaine make people more likely to act aggressive?
Yeah, I'd say it probably does. That's not to say that everyone on it is going to act aggressively but it does it make it more likely.