Anthony Metcalf's father was escorted from the Anthony family's press conference. Now, 'Protect White Americans' is planning a protest Saturday.

Witnesses told cops Metcalf tried to shove Anthony, who attended a rival high school, out of a pop-up tent when Anthony grabbed a knife from his backpack and stabbed Metcalf in the heart, leaving him to bleed out in his twin brother’s arms, according to a police report.