Top 10 Most Dangerous Football Fans! - YouTube
Timeline: A look at some of England's past problems with hooliganism | Football News - Times of India
BRUISINGS, BURNINGS AND BEATINGS: Europe's Worst Soccer Hooligans
Ugly Violence – DW – 06/12/2016
Is Germany's innovative approach to football hooliganism paying off?
Hooligans Abroad: Behaviour and Control of... by Williams, John
Hooligans, Ultras, Activists: Polish Football Fandom in Sociological Perspective | SpringerLink
Russian Hooligans' Toughest Opponents? Russia's Police - The New York Times
Euro's most dangerous hooligans from Russia's 'the killer' to thugs who stab buttocks - Daily Star
25 Fearsome Soccer Hooligan Gangs To Avoid
This is how the Russian authorities plan on preventing hooliganism at the 2018 World Cup | The Independent | The Independent
Russian Hooligans' Toughest Opponents? Russia's Police - The New York Times
6 of the most dangerous hooligans in Italy - Riot With Style - The best page about hooligans and ultras!
The bloodthirsty new generation of hooligans dragging football back to the 1970s and bringing terror to the game – The Sun | The Sun
Why do a lot of hooligan related violence/fights happen in football matches in Eastern/Central Europe (like Russia, Poland, Serbia etc)? What do general fans think about these groups of football hooligans? -
6 of the most dangerous hooligans in Italy - Riot With Style - The best page about hooligans and ultras!
Top 10 Most Controversial Moments at the Euros | Articles on WatchMojo.com
List of hooligan firms - Wikipedia
Legalizing soccer hooliganism won't prevent fan violence, say experts | CBC Radio
Inside the dark world of Bulgaria's football hooligan firms – gouged out eyes, Nazi salutes and strict violence 'rules' – The Sun | The Sun
World Football's 10 Most Dangerous Fan Bases | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Which country has the most powerful football hooligans nowadays? - Quora
Euro 2016: English, Russian fans taunt each other ahead of high-risk fixtures - ABC News
10 most dangerous ultras of world football
Football Hooligans: Famous Football Firms
