Millions marched in cities across the U.S. on Saturday as part of the nationwide "No Kings" demonstrations, according to event organizers

Discover how 1,800 nationwide protests are challenging presidential authority. Learn about the No Kings Day of Defiance rallies happening across America.

Three events have been planned for the national "No Kings" day of mobilization in Springfield. None of these have been canceled.

Demonstrators in the hundreds lined the streets of downtown Jackson outside of City Hall to take part in the 'No Kings' protest against President Trump

Events held in big cities, small towns and everything in between served as counterpoint to military parade in Washington coinciding with President Donald Trump’s 79th birthday.

The largely peaceful protests during the "No Kings Day" demonstration in downtown Los Angeles took an intense turn in the afternoon. Police ordered the crowd to disperse at about 4:15 p.m. PDT near Alameda Street and Temple Avenue, according to the Los Angeles Police Department's Central Division.

NBC News' Jacob Soboroff reports from Los Angeles City Hall where thousands of protesters have gathered for a 'No Kings' protest against the Trump administration and ahead of the president's Washington D.