A crowd-size expert from the U.K. estimates that between 10,000 to 15,000 people attended Saturday's protest in downtown Chicago. But some estimates say 75,000 people gathered downtown.

Thousands of protesters gathered in downtown Chicago on Saturday for the No Kings protest and march to oppose various issues related to the Trump administration. The big picture: The peaceful march began with a rally in Daley Plaza,

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.

The Loop was packed for hours with people fired up and angry with the Trump administration and their handling of ICE and deportations.

The Chicago Teachers Union will be joining the "No Kings" march in downtown Chicago on Saturday, June 14, according to the union's website. The march is scheduled for the same day a massive military parade is set to take to the streets of Washington in an elaborate showcase of troops, tanks, weapons and aircraft.

Marissa Sulek speaks with protesters at the Chicago No Kings rally as they marched from Daley Plaza to Trump Tower and then on through the Loop.

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.

At least one demonstration, about 70 miles from Washington, D.C., in Northern Virginia, was met with violence when a man intentionally drove an SUV through a crowd of departing protesters, striking at least one person,