Early Saturday, an already unsafe and tense White Nationalist Rally in Charlottesville, Virginia turned deadly after a speeding vehicle plowed into a crowd of counterprotestors, killing at least one person, and injuring dozens more.
Virginia state police also said one of their agency's helicopters crashed Saturday outside Charlottesville, killing two troopers.
The auto ramming killed a 32-year-old woman and wounded 19 people, including some with life-threatening injuries.
Governor Terry McAuliffe declared a state of emergency after fights broke out between armor-clad, shield-carrying white nationalist demonstrators and similarly armed counterprotesters in Charlottesville.
Following Trump's comment, several Republicans pushed for a more explicit denunciation of white supremacists.
"This is about an anti-white climate within the Western world and the need for white people to have advocacy like other groups do", he said in an interview. University police arrested one person who was charged with assault and disorderly conduct, a university statement Saturday said.
Republican member Cory Gardner meanwhile tweeted that the President Trump should "call evil by its name. It has no place in America". "The hate and the division must stop and must stop right now", Trump said, without specifically mentioning white nationalists or their views.
University President Teresa A. Sullivan, "strongly condemned the demonstration", the statement said, adding that the "intimidating and abhorrent behavior displayed by the alt-right protesters was wrong".
Shortly after the rally had been canceled in Charlottesville, a vehicle rammed into people in a street as they appeared to be leaving a counterprotest rally. They rallied behind his promises to build a wall on the southern border, reduce the number of foreigners allowed into the country and pressure everyone in the country to speak English and say "Merry Christmas".
"It is now clear that public safety can not be safeguarded without additional powers, and that the mostly out-of-state protesters have come to Virginia to endanger our citizens and property", McAuliffe said.
Right-wing blogger Jason Kessler planned what he called a "pro-white" rally to protest Charlottesville's decision to remove a statue of Confederate General Robert E. Lee from a city park. "I urge all people of good will - go home".
Former Klan Imperial Wizard David Duke attended the rally as well as other prominent white nationalist leaders. On many sides. It's been going on for a long time in our country.
Trump's candidacy excited many white nationalists, who were thrilled to hear Trump mock the Black Lives Matter movement on the campaign trail and declare that "all lives matter".
"I'm not going to make any bones about it. I place the blame for a lot of what you're seeing in American today right at the doorstep of the White House and the people around the president".
Charlottesville Police Chief Al Thomas said that at least 35 people were injured and treated by city personnel.
"We ALL must be united & condemn all that hate stands for. Lets come together as one!"
After the deaths were announced, President Donald Trump tweeted, "Deepest condolences to the families & fellow officers of the VA State Police who died today".