An African National Congress (ANC) Youth League supporter gestures in front of an ANC flag during a march in Johannesburg October 27, 2011. Hundreds of young black South Africans marched to the Johannesburg Stock Exchange on Thursday after delivering a petition to the Chamber of Mines demanding big changes to an economy still controlled by the white minority. The marchers want President Jacob Zuma's government to do more to tackle the chronic unemployment blighting the continent's biggest economy. Their proposed solutions include nationalisation of the mines in the world's biggest platinum producer, and the seizure of white-owned farms - an echo of the disastrous economic policies of Zimbabwe's Robert Mugabe. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: POLITICS BUSINESS EMPLOYMENT SOCIETY)