Thousands gathered Saturday at the Delaware County Courthouse in Media as part of the No Kings Nationwide Day of Defiance in opposition to President Donald Trump and his policies.

"We expect all participants to seek to de-escalate any potential confrontation with those who disagree with our values and to act lawfully at these events..."

No Kings is a nationwide protest organized in response to President Trump and his immigration policies. Here are live updates from Florida's rallies.

At least one demonstration, about 70 miles from Washington, D.C., in Northern Virginia, was met with violence when a man intentionally drove an SUV through a crowd of departing protesters, striking at least one person,

Attendees chanted "No dictators," "No kings" along the route. There was also an array of people carrying signs reading: "No hate, racism, Trump," "No kings," "fighting tyranny since 1776" and many more promoting peace. Cars honked, backing marchers.

Social justice groups across the country will demonstrate on June 14, as part of a national day of action organized by the 50501 movement.

Leah Greenberg, co-founder of Indivisible, one of several progressive groups organizing “No Kings Day” protests, tells CNN’s Audie Cornish that their nonviolence and training approach will be key as they observe the Trump Administration’s reaction to ICE protests in Los Angeles.

"I think we will see the largest peaceful single day protests that this country has seen certainly since the first Trump term," said Indivisible cofounder Ezra Levin, one of the organizers.