Thousands of people joined anti-migrant protests in South Africa on Tuesday, watched over by a massive police contingent that was deployed to prevent violence and intimidation. The demonstrations in Johannesburg, Pretoria, the port cities of Durban and Cape Town and other towns were called by an organisation known as March and March to demand that all undocumented foreigners leave the country. The rallies, which marked the culmination of weeks of protests that have displaced thousands of mainly...