Democracy is “in real trouble,” Mark Ruffalo told MSNBC’s Antonio Hylton while attending the “No Kings” rally in New York City Saturday. His words were echoed by Ellen Pompeo, Kerry Washington, Jimmy Kimmel, and many more notable people and celebrities who spoke out in support of the nationwide protests.

The "No Kings Nationwide Day of Defiance" is planned to "reject corrupt, authoritarian politics in the United States," organizers say.

U.S. President Donald Trump took the stage on Saturday to address the crowd attending the Army's 250th Birthday celebration, which featured a parade showcasing U.S. military equipment earlier in the day.

Opponents of President Donald Trump’s administration are set to rally in nearly 2,000 cities and towns this weekend.

Thousands of "No Kings Day" protests are set to be held throughout the country on Saturday to protest the Trump administration.

A 33-mile trip from one protest in Annapolis, Md., to the parade grandstand in front of the White House was like a journey between two different countries.

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.

Trump’s team claims 250,000 supporters watched his military parade. ‘No Kings’ protests drew at least 4 million, experts say - ‘No Kings’ protests were estimated to have drawn more than one percent of U.

"In America, we don't do kings," the No Kings website reads. "They've defied our courts, deported Americans, disappeared people off the streets, attacked our civil rights, and slashed our services. The corruption has gone too. far. [cq] No thrones. No crowns. No kings."

Additional celebrities including Anna Kendrick, Gina Rodriguez-LoCicero and Tessa Thompson were out on Saturday to protest against the Trump administration.

Elon Musk posted a cryptic message about the "No Kings" protests after activists took to the streets across the U.S. over the weekend.

Thousands took to the streets in Pittsburgh and across western Pennsylvania, as well as the country, on Saturday as part of a demonstration deemed "No Kings."