my guess is that it wasn't the typical fan but a bunch of overly drunk college students looking for a good time.
i was looking for a good time too. theres a proper way to navigate through a crowd and these dumb drunk kids had no idea how to do it. my girlfriend and i were plowed into many times beacuse people were too stupid to be able to walk. pretty much par for the course at a free show, but annoying none the less.