http://en.wikipedia.org/wiki/Crime_in_South_Africa
The country has one of the highest rates of rape in the world, with some 65,000 rapes and other sexual assaults reported for the year ending in March 2012, or 127.6 per 100,000 people in the country.[1] [14] The incidence of rape has led to the country being referred to as the “rape capital of the world”.[15] One in three of the 4,000 women questioned by the Community of Information, Empowerment and Transparency said they had been raped in the past year.[16] More than 25 per cent of South African men questioned in a survey published by the Medical Research Council (MRC) in June 2009 admitted to rape; of those, nearly half said they had raped more than one person.[17][18] Three out of four of those who had admitted rape indicated that they had attacked for the first time during their teens.[17] South Africa has amongst the highest incidences of child and baby rape in the world. If the rapist is convicted, his prison time would be around 2 years.[19] [20]
Any studies as to ‘why’? Some group has to be a the far end of the bell curve, but rape’s a strange one to take.