Motorcyclists pass a burning tyre barricade following a demonstration by Kenyan opposition party National Super Alliance (NASA) supporters on November 17, 2017 in Nairobi. Opposition leader Raila Odinga returned to Kenya on November 17 only to have his welcome party in Nairobi broken up by police firing tear gas at his convoy and supporters, an AFP reporter saw. (Photo by Yasuyoshi Chiba/AFP Photo)
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