I’m not sure what source you are using to say Muslims pose a greater threat of terrorism in the United States than white nationalists. However, in a 2015 study, police departments around the country said violence by white nationalists pose a greater risk.
Law enforcement agencies around the country have told us the threat from Muslim extremists is not as great as the threat from right-wing extremists,” said Dr. Kurzman, whose study is to be published by the Triangle Center on Terrorism and Homeland Security and the Police Executive Research Forum.
And the numbers beat that out. Just because you don’t classify terrorism as a “white person crime”, doesn’t mean it doesn’t exist.