US President Donald Trump is facing criticism for his response to the violence at a white supremacist rally.
A woman was killed and 19 people injured when a car ploughed into a crowd of counter-protesters in Charlottesville, Virginia.
Mr Trump condemned violence by “many sides” – but stopped short of explicitly condemning the far-right.
Republican Senator Cory Gardner said “Mr. President – we must call evil by its name.”
He added: “These were white supremacists and this was domestic terrorism.”
His comments were echoed by senior Republican figures.
Hundreds of white nationalists converged for Saturday’s “Unite the Right” march, called to protest against the removal of a statue of a Southern civil war hero.
The far-right demonstrators, who included neo-Nazis and Ku Klux Klan members, clashed with counter-protesters. People punched and kicked each other, and pepper spray, used by both sides, filled the air.
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As the rally was dispersed, a car was driven into a crowd of counter-protesters, the force of the crash flinging people into the air.
Twenty-year-old James Fields from Ohio, the alleged driver, is in detention on suspicion of second-degree murder and the FBI has opened a civil rights investigation.