New York City Mayor Bill de Blasio (D) on Sunday labeled violence a day earlier in Charlottesville, Va., an act of domestic terrorism.

"This white supremacy movement is a danger to us all, including our law enforcement officers who often engage with these hate groups," de Blasio tweeted.

This white supremacy movement is a danger to us all, including our law enforcement officers who often engage with these hate groups. — Bill de Blasio (@NYCMayor) August 13, 2017

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"New Yorkers know who we are—we are a city for everyone. We are particularly pained when we see violence carried out in the name of hate," he added.

De Blasio also went after President Trump for his response to the violent clashes in Virginia.

"President Trump is blunt about everything else—it’s time he stop pulling punches and condemn white supremacy in our country."

One person was killed and more than a dozen others injured when a car struck a crowd of counter-protesters at a white supremacist rally in Charlottesville on Saturday.

Trump has faced criticism after denouncing violence by "many sides" in Charlottesville and not directly calling out hate groups marching in the city.

The White House on Sunday came to Trump's defense, saying his comments included "all extremist groups."

"The President said very strongly in his statement yesterday that he condemns all forms of violence, bigotry, and hatred," the White House said in a statement. "Of course that includes white supremacists, KKK, Neo-Nazi and all extremist groups."