The sounds of one of Chicago’s largest protests in recent memory reverberated throughout downtown Saturday, as tens of thousands gathered in a united admonishment of President Trump.

The largest military parade in Washington in decades unfolded Saturday alongside hundreds of protests against it, and its chief organizer

Despite the sweltering heat, hundreds — likely thousands — of people came out to express their disapproval of the Trump administration. And while protesters were loud and passionate, it did remain peaceful.

An estimated 10,000 people were in attendance at the “No Kings” rally that began in Pioneer Park and marched north through the downtown area, the Salt Lake City Police Department said. Gunfire was heard at around 8 p.m., with video posted online showing protesters fleeing in terror.

Follow live updates as the military parade in Washington, D.C., kicks off on Trump's birthday. 'No Kings' protests by opponents are planned across the country today.

Tens of thousands of demonstrators took to the streets across Southern California on Saturday to voice their concerns over ongoing immigration raids and oppose the policies of President Trump, who they depicted as an aspiring monarch.

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

The LAPD said on social media that the people in the crowd were throwing "rocks, bricks, bottles and other objects" while they were near the federal building.