President-elect Donald Trump lashed out at demonstrators protesting his election Thursday, saying they are being unfair to him.

Trump spent the day in Washington, meeting with President Barack Obama and Republican leaders as he begins to put his government together and develop a plan for his first 100 days in office.

Trump charged the demonstrations that began Wednesday and continued Thursday were being conducted by “professional protesters” and had been “incited by the media.”

Thousands of protesters took to the streets from coast to coast, chanting “Not my president” and “Donald Trump is not OK,” holding signs reading, “Make America Free Again” and “Tear Down the Fascist.” In Los Angeles, protesters burned Trump in effigy.

new orleans protest Anti-Trump protesters in New Orleans demonstrated with a brass band, Nov. 10, 2016. Photo: Jonathan Bachman/Reuters

"We've got to protest," organizer Elijah Newman, 16, of Brooklyn, told USA Today as he stood with hundreds of other millennials in front of Trump Tower in New York.

"It's not just Donald Trump — it's the system of education," he said. "New York City is like a megaphone to the entire world. It's important that we're protesting here because it will inspire and influence other people to start protesting."

In Chicago, a man was beaten as bystanders yelled anti-Trump slogans following a traffic accident.

The video went viral.

Violence erupted in Oakland, California, that left several police officers and a journalist injured. Demonstrators also damaged storefronts. Mayor Libby Schaaf called for calm after police fired several rounds of tear gas, the San Francisco Chronicle reported.

About 500 protesters gathered in Philadelphia’s Municipal Services Building late Thursday for a candlelight vigil organized by a multiracial feminist coalition called GOP Hands Off Me — an apparent reference to the “Access Hollywood” tape on which Trump can be heard bragging about kissing women without their permission and grabbing their genitals.

"Our country does not support the hatred that Donald Trump is spouting," Shane Garner of West Philadelphia told WPVI-TV, Philadelphia.

Protesters gathered outside the White House as Trump met with Obama for the first time.

“I think that there needs to be an uproar from people who are not feeling this decision and I think it’s a damn shame that it’s not happening on the ground right here in D.C.,” Joyce Bartlett of suburban Washington told USA Today.