What to be done about South Africa’s violent xenophobia?

Several thousand foreigners have fled South Africa after days of violent attacks by angry mobs. The attacks that started in Alexandra on May 11th spread to townships and random settlements around Johannesburg and even reached parts of the city itself. It is estimated that about 20,000 people have been displaced. At least 42 people have been killed so far. In poor settlements east of the city, foreigners were burnt alive, as some residents watched and laughed. Mozambique is providing special buses, which have taken some 9,000 people home. The Rwandan Embassy in South Africa has warned Rwandans living there not to visit areas where xenophobic violence is escalating.