A 20-year-old Ohio man has been charged with murder after allegedly plowing into a crowd of counter-protesters at a white supremacist rally in Charlottesville, Va.

Authorities Saturday night identified the driver as James Alex Fields Jr.

Cops say Fields killed a 32-year-old woman when he intentionally struck her with his silver Dodge Challenger.

Relatives told The Washington Post that Fields grew up mostly in Northern Kentucky, and had been raised by a single mother who was a paraplegic.

“Not really friendly,” an uncle told the Washington Post of Fields. “More subdued.”

Fields had allegedly been driving through a crowd of mostly counter-protesters — people who had converged near Charlottesville’s Emancipation Park in opposition to a white supremacist rally there.

Witnesses said the Challenger suddenly sped up from a complete stop, ramming into the protesters and sending bodies flying.

Some 19 people were injured, five critically, officials said.