Here in the UK fan rivalry between soccer team can get out of hand - several of the so called fans arrange fights with rival fans before games. Violence inside the grounds is virtually non existent now but outside if your not careful you can end up getting into a scrape. Don't get me wrong this doesn't happen at every game every week - but it does occur. So I got thinking whats it like at NFL games and how much segregation is their bewteen the sets of rival fans? Who's the most disliked team in the NFL - and why?