The centre of Johannesburg was once an economic hub with abundant green spaces. But over the last two decades, the South African city centre has become known for crime, dumped waste, broken infrastructure and restrictions on water and electricity. A surging population has played its part. But so-called musical chairs of 10 mayors over five years and corruption during the tender process for service delivery has led to the downfall of the city's infrastructure, with buildings in the Central Business District often occupied by squatters and gangs. FRANCE 24's Tom Canetti, Caroline Dumay and Graham Walsh report.