Senator Ron Wyden, a Democrat from Oregon, posted on Twitter: "What happened in Charlottesville is domestic terrorism".
Among them was Republican Sen.
Colorado Republican Sen. Cory Gardner tweeted: "Mr. President - we must call evil by its name".
President - we must call evil by its name. These were white supremacists and this was domestic terrorism. A rally goer purposefully drove his car into a crowd of counter-protesters - an act that Trump has found it easy to call terrorism in the past. Michael Bennet, reacting to Trump's remarks about the violence in Virginia.
Police tried to keep the two sides separate but quickly dispersed, allowing for chaos to reign that culminated in the car attack on a group of hundreds of peaceful protesters. Embrace inclusion, celebrate differences-that's the America we believe in.
As we mourn the tragedy that has occurred in Charlottesville, American patriots of all colors and creeds must come together to defy those who raise the flag of hatred and bigotry.
Other national Republicans joined in calling on more condemnation of the white nationalists. Pres. Trump ignores question after blaming "many sides" for #Charlottesville.
Trump has tweeted that "we ALL must be united & condemn all that hate stands for". "This is nothing short of domestic terrorism & should be named as such".
Meanwhile, Colorado Gov. John Hickenlooper denounced the violence and said hatred had no place in society. "Lets come together as one!"
Hancock also issued another tweet that stated: "My heart wrenches for VA & I pray for the safety of all in #Charlottesville during these horrific turn of events".
Disturbances began Friday night during a march through the University of Virginia.
President Donald Trump says there's "no place" in the United States for the kind of violence that's broken out at a white nationalist rally in Virginia. His identity has not yet been released. His chief strategist, Steve Bannon, once declared that his former news site, Breitbart, was "the platform for the alt-right".