A person holds a placard reading "Ivory tower takes on the street #feesmust fall" during a student demonstration in front of the Union Buildings, the seat of the government, on October 23, 2015,  against university fee hikes, a protest that has become a focus for youth frustration in South Africa. Some demonstrators tried to force their way towards the Union Buildings, tearing down a security fence, setting fire to portable toilets and hurling bricks at police lines in chaotic scenes as South African police fired stun grenades and tear gas. AFP PHOTO / MUJAHID SAFODIEN        (Photo credit should read STEFAN HEUNIS/AFP/Getty Images)