Video below: 'No Kings Day' protests held across Maryland on day of military parade Maryland Gov. Wes Moore, an Army veteran, celebrated the U.S. Army's 250th birthday on Friday at Fort Meade.

One group was celebrating Flag Day, which commemorates the founding of the national ensign in 1777, while the other group was protesting as part of a national day of protests known as No Kings Day.

In Boston, two causes were in the spotlight, with the "No Kings" protests coinciding with Pride Month celebrations. An estimated crowd of 1 million people came out on Saturday.

Video below: 'No Kings Day' protests held across Maryland on day of military parade Maryland Gov. Wes Moore, an Army veteran, celebrated the U.S. Army's 250th birthday on Friday at Fort Meade.

The “No Kings” rallies were organized in nearly 2,000 locations nationwide, including cities, towns, and community spaces.