A South African police officer looks on during clashes with students from the University of the Witwatersrand during a protest against university fee increases on September 21, 2016 in Johannesburg, South Africa. South African police fired stun grenades and rubber bullets to disperse protesting students in central Johannesburg, in further outbreaks of unrest over higher tuition fees. (Photo by Mujahid Safodien/AFP Photo)
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