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A building is set ablaze near Ahrar Bridge, where there have been recent clashes between demonstrators and Iraq security forces, Sunday in Baghdad. Thousands of demonstrators have occupied central Baghdad since Oct. 1, calling for government and policy reform. (Erin Trieb/Getty Images)

From Iran to Chile to Sudan, protests take hold around the world

The Los Angeles Times interviewed political science professor Robert O'Brien for a piece about the rising number of street protests happening around the world.