Hooliganism has long been the scourge of soccer but in recent years, more and more security measures and initiatives have been introduced to combat the violence. Police cooperation over international borders have contributed to marked decreases in hooliganism at major soccer events.

However, soccer violence continues to rear its ugly head and security forces must develop new strategies to meet the challenge.

Here DW-WORLD.DE presents a collection of articles looking at hooliganism, its causes and the measures taken by authorities to eradicate violence from the game of soccer.