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 Chicago Police Department has canceled officers' days off for the weekend in preparation for "No Kings Day" mass protests and other planned events in the city, but CPD said it's ready to act quickly.

A vehicle was seen speeding through the crowd and several protesters were detained during the Tuesday demonstration that drew thousands to downtown Chicago, voicing opposition to the Trump administration's stepped-up use of force against immigrants.

A car sped through a protest in Chicago today that drew thousands to the Loop to decry Trump policies and ICE.

The city is bracing for more demonstrations in the coming days as more U.S. Immigration and Customs Enforcement raids are expected in Chicago too.

Heather Blair, 66, suffered a broken arm when a driver crashed into her Tuesday in the Loop. Blair said she's disappointed her injury will prevent her from attending Chicago’s “No Kings” demonstration on Saturday.

Chicago is an anchor city for the "No Kings" protests Saturday, and city officials said they are prepared for the crowds expected.

A man is in custody after Chicago police said he impersonated an officer during the ICE protests in the Loop Thursday afternoon.

Follow along for live updates as thousands of people nationwide have shown up at protests and rallies opposing ICE raids.