BUFFALO, N.Y. (WIVB) – The U.S. Justice Department is investigating Saturday’s mass shooting at a Buffalo supermarket as a hate crime and an act of racially motivated violent extremism. The gunman was identified during his arraignment as Payton S. Gendron of Conklin, New York. That name that matches the name given in a 180-page diatribe that surfaced online shortly after the attack and took credit for the violence in the name of white supremacy. Law enforcement and government officials would not confirm the validity of the document in the immediate hours after the attack. Yet, the excruciating detail provided leave...