during the 70s-90s. In 1985, Liverpool supporters charged Juventus supporters before the start of the European Cup Final match in Brussels, Belgium. As a result of the incident (see Heysel Stadium Disaster), 39 people died (mostly Juventus supporters) and 600 people were injured. I believe hooliganism in the UK started to die down in 2000s or 2010s. Now if a fight is going to occur between 2 supporting groups, then it is done at a pre-determined location instead of at the stadium.