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Thousands of protesters shut down traffic as they took to the streets of Los Angeles, calling for an end to Israeli airstrikes over the Gaza Strip.

The protesters waved flags and signs that said “free Palestine” and shouted “long live intifada,” or uprising. They marched from outside the federal building to the Israeli Consulate in the western part of the city on Saturday.

Police shut down traffic on Wilshire Boulevard, a major thoroughfare, and urged motorists to avoid the area. Police from multiple agencies were monitoring the ongoing demonstration.

Also on Saturday, hundreds of protesters gathered in Boston’s Copley Square and walked a short distance through the streets to the location of the Israeli Consulate for New England, blocking traffic.

Footage on social media shows protesters then unfurled a banner in the colors of the Palestinian flag with the words “Free Palestine” while standing on top of the awning of the building where the consulate is located.

Other smaller protests in support of Palestinians took place in Hartford and Pittsburgh, where footage shows one speaker at the protest called on lawmakers to put restrictions on how Israel can spend aid from the United States.