Definitely recommend a read of Among the Thugs for anyone interested in learning more.
It is a book from the early 90's written by an American journalist that embedded himself within several hooligan groups during the highly tumultuous era of British football. He challenges myths that these groups consist of purely poor and uneducated, disaffected members of society (he speaks with professionals, tradesmen, and many other walks of life) and provides really vivid and graphic details of horrendous events that he was a party to.
It's a fascinating read and gives a ton of perspective to the modern day Ultra movements that are intrinsically political.
Not sure what you're interested in but I read Among the Thugs by Buford in a sociology class and it's a great and interesting exploration of mob mentality/crowd psych through the lens of the life and activities of soccer/football hooligans.
Here you go!
http://www.amazon.com/Among-Thugs-Bill-Buford/dp/0679745351
edit: And here's Sam Harris talking about it. http://www.youtube.com/watch?v=c0kLplD-KS4&t=6m0s
Hey /u/Revinn, why don't you look up "Among the Thugs" by Bill Buford? I started reading it and I set it down but it seems like a fitting book to contribute to your paper.
Great book
In addition to the other books mentioned here, Among the Thugs and Winning at All Costs are both really good.
http://www.amazon.com/Among-Thugs-Bill-Buford/dp/0679745351 related soccer hooligans