Protesters clashed with police during the fourth day of demonstrations on the streets of Santiago on Monday after a weekend of civil unrest which left at least twelve dead and led Chilean President Sebastian Pinera to declare "we are at war."

The current wave of demonstrations, which is considered to be the worst in decades, was sparked by a now-suspended metro fare hike. The demonstrations have since evolved into a movement with wider grievances aimed at addressing the rising cost of living, pension reform and police conduct during demonstrations.

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