Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE on Wednesday said the country saw “people openly advocate racism and bigotry” when hate groups gathered in Charlottesville, Va., earlier this month.

“Our Department of Justice responded immediately. We are working closely with local authorities on potential criminal civil rights prosecutions,” Rosenstein said during a speech at an antiterrorism conference in Utah, according to his prepared remarks.

ADVERTISEMENT

“The First Amendment often protects hateful speech that is abhorrent to American values. But there can be no safe harbor for violence,” he added.

Rosenstein’s remarks about Charlottesville follow widespread criticism of President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE for his response to the violence in the town.

White supremacists rallied in Charlottesville to protest the decision to remove a statue of Confederate Gen. Robert E. Lee. One person was killed and many injured when a man with ties to hate groups allegedly drove his car into a crowd of counterprotestors.

Trump on separate occasions blamed “many sides” and “both sides” for the violence.

Rosenstein in his comments also highlighted the danger of domestic terrorism, arguing it “is often motivated by hatred and bigotry.”

“Violent domestic extremists pose a particular danger to law enforcement officers — not just because you go into dangerous situations, but because some extremist groups target the police,” he said earlier in the speech.

He is the second high-profile Jewish official in the Trump administration to speak out on Charlottesville in recent days. Last week, Gary Cohn, Trump’s top economic official, said the administration should do more to condemn hate groups.