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Between 200 and 300 people participated in a demonstration in downtown Boston on Tuesday night after what began as a pro-Palestinian protest quickly turned into a riot.

In total, 13 people were arrested after police say people in the group became violent toward police officers . The agitators also blocked an intersection, according to police.

"When officers attempted to move the group to the sidewalk to allow emergency vehicles to pass, protesters surrounded police cruisers, kicked vehicle doors and resisted dispersal efforts. Several officers were assaulted during this period, including one struck in the face. Protesters also ignited smoke devices and flares, further endangering officers and bystanders," the Boston Poli

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