ENEL building is on fire amid protests in Santiago, Chile on Saturday

Harrowing photographs show the mayhem in downtown Santiago, following violent protests sparked by a recent fare hike for public transport in the Chilean capital. The country's president has announced a state of emergency.

Addressing the nation in the early hours of Saturday, President Sebastian Pinera said that he would invoke a special state security law to prosecute black-hooded rioters who have set fires, looted, and destroyed public infrastructure in the capital.

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