A crackdown on undocumented migration and sometimes violent anti-immigration protests have resulted in more than 178,000 immigrants leaving South Africa in recent monthsMore than 178,000 immigrants have suddenly fled or been deported from South Africa. Nigeria, Ghana, Mozambique and Lesotho have said they've each had more than 1,000 citizens returning from South Africa. The returns are a combination of people deported by South Africa and others taking up repatriation offers by South Africa or their home countries — which make up the vast majority. South Africa said this week that some 19,000 people had been officially deported since April. South Africa blocked the move but called for wider talks on migration in Africa.