Officials are investigating whether the man believed to have killed eight people at a shopping centre in Dallas had an interest in white supremacist ideology, according to a law enforcement officer. Marcelo Garcia, 33, was shot dead by a police officer near the suburban Allen Premier Outlets after the shootings on Saturday. The law enforcement official told The Associated Press federal agents had been reviewing social media accounts and believed Garcia had expressed an interest in neo-Nazi views and had a patch on his chest reading RWDS – an acronym for Right Wing Death Squad which is popular among extremists...