Zimbabweans living in South Africa carry placards during a protest against the imprisonment of opposition activists, outside the Harare consulate in Johannesburg March 13, 2007. Rights groups say leader of the Movement for Democratic Change (MDC) Morgan Tsvangirai and other opposition figures were tortured after they were arrested in Harare on Sunday during a prayer meeting organised by a coalition of opposition, church and civic groups to address Zimbabwe's political and economic crisis.