“More than a decade after England finally tamed the roving bands of hooligans that long ravaged soccer stadiums in Britain, fan-related violence continues to stain the sport in Argentina. The unrest in part reflects an increasingly violent Argentine society, where street crime has been on the rise. But much of the violence can be traced to hostilities between rival factions of barra bravas, the Argentine version of hooligan fan groups that use fists, firearms and knives, and operate like mini-mafias. They engage in legal and illegal businesses, including selling drugs, often with the cover and complicity of the police, politicians and club officials, according to prosecutors and others who have studied them.”
— In Argentina, Violence Is Part of the Soccer Culture - NYTimes.com