The president's comments effectively wiped away the more conventional statement he delivered at the White House a day earlier when he branded members of the KKK, neo-Nazis and white supremacists who take part in violence as "criminals and thugs."
Trump's advisers had hoped those remarks might quell a crush of criticism from Republicans, Democrats and business leaders. But the president's retorts Tuesday suggested he had been a reluctant participant in that cleanup effort and renewed questions about why he seems to struggle to unequivocally condemn white nationalists.
The blowback was swift, including from fellow Republicans. Sen. Marco Rubio of Florida said Trump should not allow white supremacists "to share only part of the blame." House Speaker Paul Ryan declared in a tweet that "white supremacy is repulsive" and there should be "no moral ambiguity," though he did not specifically address the president.
Trump's remarks were welcomed by former Ku Klux Klan leader David Duke, who tweeted, "Thank you President Trump for your honesty & courage to tell the truth."
In downtown Chicago, several hundred people came out for an protest and march organized by 15 different faith and anti-racism groups, including Black Lives Matter, Jewish Voices for Peace and the Chicago Alliance Against Racism and Political Oppression, in Federal Plaza. After speeches, the crowd marched through the Loop to Trump Tower, where the protest and speeches continued.
"We will not cower from them, they must cower from us!" one speaker cried.
Saturday's violent, deadly rally in Virginia re-focused protesters who have spent months demonstrating against the Trump administration.
"This neo-Nazi movement is disgusting and it's not what this country represents," said Jasmine, protester.
"I just don't understand how, looking at the history of white supremacy, and the way that white supremacists have lynched and murdered black people or the way that Nazis have exterminated 6 million Jewish people, how can you not openly denounce that?" said one of the rally's organizers.
Their signs and chants through the city streets were not ambiguous.
"No walls, no registry, no white supremacy!" they chanted at one point.
"The president, David Duke, we must smash them now!" another speaker declared.
Behind the clambering of the crowd, one passerby wanted an alternative.
"I think if people just bring it down, bring emotions down, and have a conversation, things would get a lot better," Carol, who did not want to use her last name, said.
Violence broke out Saturday in Charlottesville, a picturesque college town, after a loosely connected mix of white nationalists, neo-Nazis and other far-right extremists assembled to protest the city's decision to remove a towering statue of Confederate Gen. Robert E. Lee. Heather Heyer, 32, was killed when a man plowed his car into a crowd of counter-protesters.
WATCH: Donald Trump's full remarks
In the immediate aftermath, Trump placed the blame on "many sides." On Monday, at the urging of his aides, he delivered a more direct condemnation of white supremacists. But he returned to his original arguments Tuesday during an impromptu press conference in the lobby of his Manhattan skyscraper, declaring "there are two sides to a story."
He acknowledged there were "some very bad people" looking for trouble in the group protesting plans to remove the statue. "But you also had people that were very fine people, on both sides," he said.
Trump sided with those seeking to maintain the monument to Lee, equating him with some of the nation's founders who also owned slaves. Confederate monuments have become rallying points for supporters of both preserving and toppling them.
"So, this week it's Robert E. Lee," he said. "I noticed that Stonewall Jackson's coming down." I wonder, is it George Washington next week and is it Thomas Jefferson the week after? You really do have to ask yourself where does it stop?"
He continued: "You're changing history. You're changing culture."
The president's comments mirrored rhetoric from the far-right fringe. A post Monday by the publisher of The Daily Stormer, a notorious neo-Nazi website, predicted that protesters are going to demand that the Washington Monument be torn down.
Trump's handling of the weekend violence has raised new and troubling questions, even among some supporters. Members of his own Republican Party have pressured him to be more vigorous in criticizing bigoted groups, and business leaders have begun abandoning a White House jobs panel in response to his comments.
White House officials were caught off guard by his remarks Tuesday. He had signed off on a plan to not answer questions from journalists during an event touting infrastructure policies, according to a White House official not authorized to speak publicly about a private discussion. Once behind the lectern and facing the cameras, he overruled the decision.
As Trump talked, his aides on the sidelines in the lobby stood in silence. Chief of staff John Kelly crossed his arms and stared down at his shoes, barely glancing at the president. Press secretary Sarah Huckabee Sanders looked around the room trying to make eye contact with other senior aides. One young staffer stood with her mouth agape.
Kelly was brought into the White House less than a month ago to try to bring order and stability to a chaotic West Wing. Some Trump allies hoped the retired Marine general might be able to succeed where others have failed: controlling some of Trump's impulses. But the president's improvisations on Tuesday once against underscored that he cannot be controlled by his advisers.
Democrats were aghast at Trump's comments. Virginia Sen. Tim Kaine said on Twitter that the Charlottesville violence "was fueled by one side: white supremacists spreading racism, intolerance & intimidation. Those are the facts." Sen. Brian Schatz of Hawaii said on Twitter that he no longer views Trump as his president.
"As a Jew, as an American, as a human, words cannot express my disgust and disappointment," Schatz said. "This is not my president."
When asked to explain his Saturday comments about Charlottesville, Trump looked down at his notes and again read a section of his initial statement that denounced bigotry but did not single out white supremacists. He then tucked the paper back into his jacket pocket.
Trump, who has quickly deemed other deadly incidents in the U.S. and around the world acts of terrorism, waffled when asked whether the car death was a terrorist attack.
"There is a question. Is it murder? Is it terrorism?" Trump said. "And then you get into legal semantics. The driver of the car is a murderer and what he did was a horrible, horrible, inexcusable thing."
Trump said he had yet to call Heyer's mother but would soon "reach out." He praised her for what he said was a nice statement about him on social media.
As he finally walked away from his lectern, he stopped to answer one more shouted question: Would he visit Charlottesville? The president's response was to note that he owned property there and to say - inaccurately - that it was one of the largest wineries in the United States.
Illinois Senator Dick Durbin tweeted his rebuke of Trump shortly after 4 p.m., saying, "There is only one side that brought brutality, nazi [sic] flags, and swastikas to Charlottesville."
There is only one side that brought brutality, nazi flags, and swastikas to Charlottesville. https://t.co/Zh2M0uKt29— Senator Dick Durbin (@SenatorDurbin) August 15, 2017
LeBron James also weighed in on Twitter, declaring that "Hate has always existed in America. Yes we know that but Donald Trump just made it fashionable again!"
Hate has always existed in America. Yes we know that but Donald Trump just made it fashionable again! Statues has nothing to do with us now!— LeBron James (@KingJames) August 15, 2017
Illinois Congresswoman Jan Schakowksy (D-9) released a statement, saying, "Watching President Trump's racist, rambling press conference today was surreal and stunning. The President laid bare for all the world to see the ideas and worldview that have earned him praise and admiration from the likes of David Duke and the deepest, darkest corners of the neo-Nazi community. We saw the real, unscripted Donald Trump and it was horrifying."
Illinois Senator Tammy Duckworth released a statement, saying in part, "There are American patriots, and then there are the white nationalists and Nazis that fought against them. Members of my own family, along with countless brave American servicemembers, defeated our enemies and protected our country. Members of my family also fought on both sides of the Civil War, but I'm not confused about which side was fighting for American values. The terrorist attack in Charlottesville is not the fault of many sides, no matter what Mr. Trump says. Heather Heyer was not murdered by both sides, no matter what the white nationalists who continue to be bolstered by the President's offensive and ignorant words say."
House Speaker Paul Ryan also tweeted about Trump's words, saying, "We must be clear. White supremacy is repulsive. This bigotry is counter to all this country stands for. There can be no moral abiguity." He did not mention Trump by name.
We must be clear. White supremacy is repulsive. This bigotry is counter to all this country stands for. There can be no moral ambiguity.— Paul Ryan (@SpeakerRyan) August 15, 2017
WLS-TV contributed to this report.