White nationalists clashed with counter-protesters before police moved in and dispersed the crowd at a demonstration in downtown Charlottesville, Virginia. Alt-right activists and white supremacists planned to protest the city's decision to remove a statue of Confederate General Robert E. Lee from the city's Emancipation Park.

Virginia State Police said Saturday night that three people had been arrested in connection to the rally. Troy Dunigan, 21, of Chattanooga, Tenn., was charged with disorderly conduct; Jacob L. Smith, 21, of Louisa, Va., was charged with misdemeanor assault and battery; and James M. O'Brien, 44, of Gainesville, Fla., was charged with carrying a concealed weapon, Virginia State Police said.

Virginia Gov. Terry McAuliffe declared a state of emergency in the city to aid in the local response. He blamed "mostly out-of-state protesters" for the violence and clashes.

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"I am disgusted by the hatred, bigotry and violence these protesters have brought to our state over the past 24 hours," McAuliffe said in a statement. He said state troopers and the Virginia National Guard were providing support to local authorities.

The violence didn't die down even after police attempted to clear the area. A car struck several people, resulting in multiple injuries.

In a tweet, President Trump said Americans must "condemn all that hate stands for," saying "there is no place for violence in America."

We ALL must be united & condemn all that hate stands for. There is no place for this kind of violence in America. Lets come together as one! — Donald J. Trump (@realDonaldTrump) August 12, 2017

After a series of earlier confrontations in Emancipation Park, police declared the assembly unlawful and officers in riot gear began to clear the area shortly after noon. The crowd quickly dispersed and police cleared the area, which had earlier been the site of aggressive clashes.

Jason Kessler, the organizer behind the "Unite the Right" rally, told CBS News he plans to sue the city for violating a court order permitting the rally to be held in the park.

"Our First Amendment rights were violated today," Kessler said by phone. He said the city of Charlottesville and McAuliffe violated the court ruling because they "didn't like the outcome."

Some protesters who came for the "Unite the Right" rally were armed and dressed in military-like clothing, while others wore shirts with Nazi symbols and quotes from Adolf Hitler. Another read "diversity is just a genocidal scam."

The protest turned violent well ahead of the rally's official noon start time. At least two people were treated for serious but non-life-threatening emergencies from altercations by 10:30 a.m. Counter-protesters flooded the area to square off with the group of alt-right activists and white supremacists. Police deployed tear gas against the crowd shortly before 11:30 a.m.

A man is down during a clash between members of white nationalist protesters and a group of counter-protesters in Charlottesville, Virginia, Aug. 12, 2017. Joshua Roberts / Reuters

Members of Congress largely condemned the rally, with House Speaker Paul Ryan denouncing the "spectacle" as "repugnant," calling on Americans to unite against hate.

First lady Melania Trump tweeted that "no good comes from violence."

Our country encourages freedom of speech, but let's communicate w/o hate in our hearts. No good comes from violence. #Charlottesville — Melania Trump (@FLOTUS) August 12, 2017

Saturday's confrontation came after a large group of torch-bearing white nationalists marched through the University of Virginia (UVA) campus Friday night, after a judge issued a ruling allowing Saturday's protest to move forward.

UVA cancelled all scheduled events planned for Saturday citing "ongoing public safety concerns," but announced that the college's medical center would remain open.

"The University is monitoring the developments in Charlottesville and continues to coordinate with state and local law enforcement," the school said in a statement.

A police cruiser shown amid protests and counter-demonstrators descended on the small city of Charlottesville, Virginia, Saturday. Twitter / Preston Willett, WCAV

Since Thursday, organizers of the rally has been involved in a legal battle regarding the place of this protest.

Citing crowd safety concerns, the city of Charlottesville approved a protest permit earlier this week for the event to specifically be held in a different larger park instead of the smaller Emancipation Park where the Lee statue stands.

Late Friday night, a U.S. district court judge in Charlottesville agreed. In the ruling, Judge Glen E. Conrad said the city's "11th-hour decision" to revoke the permit was "based on the content of [Kessler's] speech rather than other neutral factors."

Kessler was represented by the American Civil Liberties Union of Virginia and the Rutherford Institute.

Several alt-right members were invited to speak at the rally including white nationalist Richard Spencer. Many credit Spencer with popularizing the term "alt-right" as he garnered national media attention after being heard shouting "Hail Trump!" at a white nationalist convention in Washington, D.C., and later, being punched in the face on Inauguration Day while giving an interview.

Teresa Sullivan, UVA's president, denounced the march in a statement issued Friday.

"I am deeply saddened and disturbed by the hateful behavior displayed by torch-bearing protesters that marched on our Grounds this evening," she said. "The violence displayed on Grounds is intolerable and is entirely inconsistent with the University's values."

Bo Erickson, Justin Carissimo, Kathryn Watson, Paula Reid and Stefan Becket contributed to this report.