The "No Kings" protest is taking place in cities across the country in response to Trump's military parade in Washington, D.C.

That’s part of why George Atkinson, a former high school government teacher, felt compelled to join a protest in downtown Houston on Saturday. The 89-year-old affixed a sign to his walker that read, “The clothes have no emperor! He’s all hat and no cattle!”

South Jersey residents, such as Jessica Herrera of Cherry Hill, took to the streets of Philadelphia to sound off against the Trump administration.

The "No Kings" protest is taking place in cities across the country in response to Trump's military parade in Washington, D.C.

An armed man was arrested on Saturday in the area of a "No Kings" rally in West Chester, Pennsylvania, police said.

As a military parade rolls through Washington, DC, on Saturday – President Donald Trump’s birthday – millions of Americans are expected to protest in what organizers predict will be the strongest display of opposition to Trump’s administration since he took office in January.

Follow the live updates on D.C.’s massive military parade in celebration of the Army’s 250th birthday on President Donald Trump’s birthday.

Philadelphia is among five Democratic-led cities where President Trump is preparing to send ICE tactical teams ahead of nationwide protests.