Kenyan school pupils and activists challenge riot police during a protest against the removal of their school's playground, at the Langata Road Primary School, in Nairobi, Kenya Monday, January 19, 2015. Kenyan police tear-gassed schoolchildren demonstrating against the removal of their school's playground, the land of which has been allegedly grabbed by a powerful politician, according to a Kenyan human rights activist. (Photo by Brian Inganga/AP Photo)
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