People gathered in Chicago and the suburbs Saturday for a "No Kings" protest amid ongoing federal immigration enforcement operations in the area.

An investigation is underway after four people were injured in a mass shooting overnight on Chicago's Near North Side. CBS News crews saw at least 30 shell casings on the scene at Division and Dearborn streets.

The "No Kings" organizing group said rallies are expected in hundreds of locations across the country on Saturday in cooperation with civil rights groups and other organizations. The movement said it mobilized millions of people at its protests in June. Here is the latest map from their website showing where rallies are planned:

Civilians are tailing officers, guarding Home Depots, and patrolling their neighborhoods. Inside three days fighting ICE.

The 11th annual "Arts in the Dark" Halloween parade returns to the Loop on Saturday night. The family-friendly parade will feature floats, puppets, and performances. The parade steps off on Randolph Street and continues along State Street from 6 p.m. to 8 p.m.

A federal judge on Thursday said she is "profoundly concerned” with the apparent violations by federal agents of a temporary restraining order she issued last week.

Illinois Gov. JB Pritzker struck a defiant tone as he addressed protesters in Chicago, where high-profile clashes between residents and federal immigration authorities have taken place in recent weeks.

A man was shot and killed during a domestic fight inside a house in the Bucktown neighborhood on Friday night. Chicago police responded to a residence in the 2000 block of North Leavitt Street just before 10:40 p.m. and found a 53-year-old man with gunshot wounds.