FILE - People place flowers and pay their respects at a memorial for victims of the Allen Premium Outlets mass shooting, May 9, in Allen, Texas. Misleading claims about the gunman who killed eight people at a Dallas-area shopping center are swirling on Twitter, thanks in part to the platform’s owner, Elon Musk. Musk has questioned the gunman’s self-professed white supremacist views, and said they could be part of a “psychological operation” to mislead the public. (Elías Valverde II/The Dallas Morning News via AP, file )