We have that here too sometimes (though in a much light version of hooliganism, the only "weapon" they use are petards sometimes) between the 3 main teams (Fc Porto, Benfica and Sporting). The chairman and board members of those teams spent years and years insulting each other and as a result, those "fans" started to get really angry against their rivals and brought violence to the matches on the past 20 years.
This happened not only in football matches but to other sports those 3 teams play, ruining those sports (roller hockey, basketball, handball, futsal, non-popular sports that you could go and watch the games peaceful and now it's better to watch it on TV....).
I have to say though that in the past 2 years the things got a bit better. The hate still exists (and a lot, we have tv shows where "famous" fans from each of the big teams insult each other for 2 hours.....) but I think nowadays that hate between fans happens on facebook and social media only