From that FOX article:
Field’s mother, Samantha Bloom, told The Associated Press on Saturday night that she knew her son was attending a rally in Virginia but didn’t know it was a white supremacist rally.
“I thought it had something to do with Trump. Trump’s not a white supremacist,” Bloom said.
“He had an African-American friend so …,” she said before her voice trailed off. She added that she’d be surprised if her son’s views were that far right.