Brazil stadium war: Massive violence as football fans clash at Atletico vs Vasco game

WARNING: GRAPHIC FOOTAGE A key Brazilian league match was stopped for more than an hour after fans started fighting in the stands on Sunday, prompting police to fire rubber bullets and tear gas to contain the crowd and bring a helicopter onto the field to airlift an injured man to a hospital. Supporters from Atletico Paranaense and Vasco da Gama charged against each other and it took several moments for police to take control of the situation in the southern city of Joinville. Groups of