CARL DE SOUZA/AFP via Getty ImagesThomas HindleBrawl in crowd forces delay of Argentina's World Cup qualifier at Brazil as Lionel Messi leads team-mates into dressing roomArgentinaBrazilLionel MessiBrazil vs ArgentinaWorld Cup Qualification CONMEBOLArgentina captain Lionel Messi led his team off the pitch before kickoff as Argentina fans clashed with Brazilian policeArticle continues belowArticle continues belowArticle continues belowFans clashed before kickoff, World Cup champs left pitchPolice shown battling Argentinian fansGame eventually started 30 minutes late