The mostly white men who gathered to defend the statue of Confederate Gen. Robert E. Lee, and white nationalism in general, came from many walks of life. And as they, one by one, began to be identified and their images circulated in the news media, their family members expressed everything from denial to disavowal about their loved one’s beliefs and actions. The mother of James Alex Fields Jr., the 20-year-old accused of driving a car into a group of people in Charlottesville, Virginia, on Saturday, killing a young woman and injuring 19 people, says she had no idea that her son was attending a white nationalist demonstration…