Facebook on Tuesday removed almost 900 accounts associated with the far-right Proud Boys and American Guard, including those belonging to Proud Boys supporters who marched into a protest zone in Seattle Monday and confronted anti-racist demonstrators.

Facebook said the takedowns of more than 500 Facebook accounts and more than 300 Instagram accounts followed a smaller round of suspensions two weeks ago.

"We initially removed a set of accounts for both organizations on May 30 when we saw that both organizations started posting content tied to the ongoing protests," said a Facebook spokeswoman who asked not to be identified. "We were continuing the work to map out the full network."