Not so bad now in England, but it's really bad in Central and Eastern Europe.
England used to be really bad, but after the fan tragedies at Heysel in 1985 and Hillsborough in 1989, the police really cracked down hard on the hooligans and also forced a change in stadium configuration to discourage such activities. Today, the fan experience at Premier League stadiums are totally different than what it was before 1989.