The Las Vegas Sun has begun reporting details on the couple who killed two armed police officers and a bystander in a Walmart before they died in an apparent suicide pact. Neighbors said they bragged of their gun collection, distributed white supremacist literature, claimed to have participated in demonstrations at the Bundy ranch and were known for appearing around town in costumes as characters from Batman — The Joker and Harley Quinn.
More details here from Las Vegas Review Journal of an even more murderous plan in documents left by the couple. It says the man they killed in the Walmart was a man with a concealed carry permit who tried to stop Jerad and Amanda Miller. She slipped behind the man and shot him down at close range.