South African police were on Sunday hunting the perpetrators of two separate shootings that killed 27 people within hours of each other, in stark reminders of the country's problem with gun violence.The motives for the shootings near Johannesburg and Cape Town were unknown, but gang violence and organised crime remain rife in South Africa, despite government efforts to curb one of the highest per-capita murder rates in the world.Onlookers gathered behind police lines at the scene of the shoo...
