Police said the helicopter was assisting law enforcement officers monitor the rally in Charlottesville.
In one incident, a vehicle barreled through a crowd gathered to oppose the rally.
The suspect has been identified as 20-year-old James Fields. A graphic video showed the moment the vehicle hit the crowd. "And then it reversed back into the street dragging bodies and clothes".
CHARLOTTESVILLE, Va. - Hundreds of people chanted, threw punches, hurled water bottles and unleashed chemical sprays on each other Saturday morning at white nationalist rally in Charlottesville.
Fighting broke out on Saturday in the city's downtown, when hundreds of people, some wearing white nationalist symbols and carrying Confederate battle flags, were confronted by a almost equal number of counter-protesters.
Thomas said the hit-and-run is being treated as a case of criminal homicide. - The head of the US bishops conference called for prayers after one person was killed and over a dozen injured during a white nationalist protest in Charlottesville, Virginia.
Supercoppa, Inzaghi: "Dobbiamo giocare la partita perfetta"
Il mister non è preoccupato a riguardo: "Penso che la Lazio ci arrivi bene perché abbiamo fatto un buonissimo precampionato. Tabù . "I numeri parlano chiaro: la tradizione è sfavorevole contro la Juventus , come la maggior parte delle squadre".
It was not immediately clear how the crash was connected to the rally; Corinne Geller, a Virginia State Police spokeswoman, says the pilot and a passenger were killed in the crash Saturday afternoon. Authorities declared an unlawful assembly and police ordered people to disperse.
"Unfortunately, white supremacists still supporting the symbols of racial hatred and still fighting a war that sought to enslave people because of the color of their skin", Frazier said in the statement.
The father of Trump's press secretary, former Arkansas Gov. Mike Huckabee, posted that white supremacy is the "worst kind of racism-it's EVIL and perversion of God's truth to ever think our Creator values some above others".
Trump: "We condemn in the strongest possible terms this egregious display of hatred, bigotry, and violence on many sides". More protesters gathered to rally against the right-wing demonstrators.
But some of the white nationalists cited Trump's victory as validation for their beliefs, and Trump's critics pointed to the president's racially tinged rhetoric as exploiting the nation's festering racial tension.
The FBI and federal prosecutors announced Saturday night that a civil rights investigation will be opened into the vehicular death of a 32-year-old woman during a white nationalist rally Saturday.