A massive brawl broke out between two rival soccer fanbases Sunday afternoon in Los Angeles ... with haymakers being thrown as security desperately tried to get a handle on the situation. It all went down during the Clásico Tapatío showdown at BMO Stadium between Chivas de Guadalajara and Atlas F.C. -- the oldest rivalry in Mexican soccer. A video shared on X shows a group of people turning the stadium into a fight club, with people scrapping near a beer vendor. One of the individuals ended up