Willie Mathews Jr., of south suburban Matteson, was spotted wearing a T-shirt and backpack with the word police on it around 5 p.m. in the 200 block of South Michigan Avenue. Police asked him for his credentials before arresting him and finding a loaded gun, police said.

Chicago is responding to President Donald Trump’s aggressive immigration raids with protests. Here’s what we know with two more planned.

Protests across the country including in Chicago over federal immigration enforcement raids and President Donald Trump’s move to mobilize the National Guard and Marines in Los Angeles are expected to continue Friday and into the weekend.

Records obtained by the Sun-Times show the police have handed over documents that include the names, addresses and countries of origin of people targeted by federal immigration authorities.

A Chicago protest is planned for Thursday afternoon by immigration advocates, who are calling for ICE tactical teams sent by the Trump Administration to stand down.

Protests against the Trump administration are planned in cities across all 50 states, with some international protests planned as well.

Officers spotted the man with "police identifiers" leaving a parking garage around 5 p.m. in the 200 block of South Michigan Avenue, Chicago police said.

Protests over immigration raids stretched into a fifth night in Los Angeles and spread to other cities, including New York, Chicago and Milwaukee, prompting clashes between police and demonstrators.California’s Democratic Governor Gavin Newsom accused President Donald Trump of misusing his power by mobilizing troops in Los Angeles and warned other states to prepare for similar unrest.