Hundreds of people protesting Israel’s war in Gaza marched to the Brooklyn Museum Friday afternoon, set up tents in the lobby and unfurled a “Free Palestine” banner from the building’s roof before police moved in to make arrests.

New York City police officers tackled and punched some protesters during scuffles that broke out in the crowd outside the museum, AP reported. 

Other protesters held banners, waved Palestinian flags and chanted boisterously on the steps of the grand, Beaux Arts museum, which is the city’s second largest.

The New York City Police Department says arrests were made, but it is unknown exactly how many people were taken into custody.