Thousands gathered in Daley Plaza and in suburban events in protests timed to coincide with a military parade in Washington celebrating the Army's 250th anniversary and President Donald Trump's 79th birthday.

Willie Mathews Jr., 21, of Matteson, Illinois, is facing felony charges including false personation of a police officer with a weapon.

Thousands of people filled several city blocks in and around Daley Plaza in downtown Chicago--cheering, banging drums and waving upside-down American flags in the air to signal what they see as a country in distress.

Photos from the “No Kings” protest in Chicago on Saturday as part of an anti-Donald Trump rally on the same day as his military parade in Washington, D.C., for his birthday.

A huge and peaceful crowed turned out for the "No Kings" rally, shutting down much of the Loop as part of a nationwide protest movement to denounce the Trump administration.

At 4 p.m. as protesters were gathering, a counterprotester came to the scene — prompting angry chants to erupt from the main protest.

Thousands across the Chicago area rallied for "No Kings Day" protests against the Trump administration. There seemed to be a never-ending crowd of people marching from Daley Plaza all throughout the Loop.

The protests were scheduled nationwide to protests many Trump Administration policies, including immigration policies and the president's use of ICE.

The Chicago No Kings rally comes as protests have ramped up against ICE and the Trump administration this week locally and in Los Angeles, where the National Guard and Marines have been deployed against the wishes of local leaders.

A man arrested for impersonating a police officer during an anti-ICE protest in Chicago had a loaded semi-automatic weapon, badges and fake documents, police sources said.

The Houston demonstration is one of several planned in the region throughout the day and is expected to draw thousands of protesters.