In Johannesburg, Malawian gardener Kaunga Nyirenda has been living in fear for weeks. He tells his story to CNN World. In early June, two men suddenly showed up at his door and demanded that he leave the country. “When are you leaving? We want to solve the problems in our country. If you don’t leave now, you’ll leave in a coffin, because after June 30, we won’t need anyone anymore,” they told him. So goes the shocking testimony of gardener Nyirenda to CNN World. It turns out this is not an isolated incident. A movement that opposes migrants and does not shy away from violence is rapidly gaining popularity in South Africa.