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.

Several Maryland communities are planning to hold "No Kings" protests on Saturday, June 14, joining what organizers are calling "a nationwide day of defiance."

Thousands of Coloradans are expected to turn out on Saturday to stage protests against recent immigration crackdowns and executive orders from the Trump administration that have led to violent

The largest is expected to take place in Portland, where at least five separate demonstrations are planned in and outside of downtown. Two downtown events will happen on Naito Parkway. One will gather at the Salmon Street Springs and another will form at the Battleship Oregon Memorial in Tom McCall Waterfront Park.

The "No Kings" Chicago protest Saturday in Daley Plaza is one of the anchor events for a national anti-Trump movement. It is one of more than 1,800 protests being held nationwide in response to the Trump military parade.

Opponents of President Donald Trump’s administration are set to rally in Dallas, Fort Worth, Frisco, Arlington, other North Texas cities.

Here is a breakdown of the No Kings movement and what to know ahead of the protests: According to the website, the No Kings movement is "taking action to reject authoritarianism" with upcoming protests.

Sellers are hawking "No Kings" t-shirts, hats and other items in a move to cash on anti-Trump protests planned for June 14.