It is not the most "local" derby in Argentina (the clubs are about 7 km apart, in Buenos Aires) but it grips the country for days. The rivalry, hatred and violence involved are based on social class and money. Both clubs were founded in the poor district of Buenos Aires called La Boca. Boca Juniors stayed there while River Plate moved in the 1930s to the smart district called Nuñez. Boca vs River is 90 minutes of deafening noise and huge avalanches of standing fans behind the goal.