At the end of the first lunch, there was a group of about -...

At the end of the first lunch, there was a group of about - I don't know how many it began as - but it escalated to about 100 students who stayed beyond the period when the lunch was to end. They started chanting 'Mexico, Mexico' and waving flags. The problem began when they exited that area and began co-mingling and being jostled by other students and some fights broke out.