CharlottesvilleMayor Michael Signer, a Democrat, blamed the violence on a poisoned political discourse in the country.
He said pieces of the helicopter started to break off as it fell from the sky.
"The president said very strongly in his statement yesterday that he condemns all forms of violence, bigotry, and hatred, and of course that includes white supremacists, KKK, neo-Nazi and all extremist groups", an administration figure said in the statement. The car killed a woman Heather Heyer, 32, and wounded 19 people.
Fields' mom was unaware of the rally or her son's ties to white nationalism.
Signer said he believes that Trump's campaign and the rhetoric that he used on the campaign trail last year emboldened racists and neo-Nazis across the country.
"Our message is plain and simple - go home", he said.