This is not hypothetical, they literally sell books about rightwingers hanging disloyal whites for not being radical racialists. They call it the Day of the Rope.
These are just gamma losers with power fantasies.
At my son's track meet I met a white woman who was worried about her son who is deployed in Iraq whose base got hit with a missile. When I look at the "radical right" they sympathize with these exact Muslims.
They hate real white people, while claiming to be race purists.