According to estimates from law enforcement and event organizers, more than 100,000 people likely attended rallies in Seattle, Tacoma, Olympia.

Massive crowds gathered in Cal Anderson Park, aboard a state ferry and at the state Capitol to denounce the hard-line policies of President Donald Trump.

"No Kings" protests against President Donald Trump’s policies are scheduled in nearly 2,000 cities across the U.S. Saturday as a military parade rolls in Washington for the Army’s 250th anniversary – which is also Flag Day and Trump’s birthday.

Phoenix's "No Kings Day" rally against President Trump, one of many nationwide, coincided with his 79th birthday and military parade in Washington, D.C.

Thousands gathered in downtown Rock Hill on Saturday for a “No Kings” rally and march, joining national demonstrations coinciding with Flag Day and a military parade in Washington, D.C., by President Donald Trump to honor the U.S. Army’s 250th anniversary.

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.

Protesters in Pinellas and Hillsborough counties chant and stand in solidarity for the rally tied to hundreds more happening in cities across the nation.

The parade, honoring the Army’s long-planned 250th anniversary celebration and coinciding with Trump’s 79th birthday, is set to step off from the Lincoln Memorial under the threat of stormy weather in Washington and protests around the country tied to a turbulent week of immigration enforcement that has involved military deployment in Los Angeles.