Seattle police arrested 11 people Tuesday afternoon after they allegedly damaged property during an anti-police rally near the Space Needle, authorities said.

A group of about 20 to 30 people gathered near Denny Park around 3 p.m., before marching north along Fifth Avenue North, according to a statement from the Seattle Police Department. As they walked, some people in the group started damaging the windows of nearby businesses and spray painting buildings, prompting other people to try and intervene, the statement said.

According to the statement, officers then started using pepper spray and making arrests.

Every Night Direct Demonstration, one of the groups that has been active in recent demonstrations demanding racial justice and an end to police brutality, had called for protesters to gather at Denny Park on Tuesday afternoon, advertising the event with hashtags such as “#abolishspd” and “#abolishpolice.”

In a livestream recording of part of the protest, a group of bike officers can be seen walking next to a group of protesters near the Seattle Center before pulling people out of the crowd to take them into custody.

Officers later recovered bear mace, spray paint, a baton and a knife from those who were arrested, the statement said.

One of the people who was arrested was taken to the hospital. No further information about the person’s condition was immediately available.

The 10 others were booked into King County Jail on investigation of malicious mischief and obstruction.