Peter Bergen : People in Las Vegas have had extremist , anti - government views . It 's far from the first instance of extreme right - wing terrorism in the U.S . Since 9/11 , more have died in far - right terrorism than Islamic terrorism , Bergen says . Bergen : Authorities should pay more attention to the threat posed by homegrown terrorism .
Peter Bergen : Shooters in Las Vegas murders had extremist , anti-government views . It 's far from the first instance of extreme right-wing terrorism in the U.S . Since 9/11 , more have died in far-right violence than Islamic terrorism , Bergen says . Bergen : Authorities should pay more attention to the threat posed by homegrown extremists .