The LAPD said on social media that the people in the crowd were throwing "rocks, bricks, bottles and other objects" while they were near the federal building.

The organized opposition was timed for the day President Trump is hosting a rare U.S. military parade in Washington that's taking place on his 79th birthday.

The tens of thousands of "No Kings" protesters who hit the streets across the nation this weekend were vibrant and vocal but largely peaceful, with perhaps the biggest gathering drawing an estimated 30,