South African police break up anti-immigrant protests

By TJ StrydomPRETORIA (Reuters) - South African police fired tear gas, water cannon and rubber bullets to disperse rival marches by hundreds of protesters in Pretoria on Friday, after mobs looted stores this week believed to belong to immigrants.Anti-immigrant violence has flared sporadically in South Africa against a background of near-record unemployment, with foreigners being accused of taking jobs from citizens and involvement in crime.Armed police had formed a barrier between rival crowds o