When authorities released the name, ethnicity and first details about the alleged gunman who killed eight people at the Allen Premium Outlets, questions soon emerged on social media about how a Hispanic person might hold neo-Nazi and extremist views. One Twitter user wrote, “This seems like misdirection to me. A Hispanic, white supremacist? I think they are mutually exclusive.” Is it unusual for a Hispanic person to adopt white supremacist beliefs? The Dallas Morning News spoke with several experts who have studied extremism, the role of race and ethnicity in racism, the history of racism among Hispanic people dating back...