Skin-heads are white dumbass. And for someone with a shaved head to be considered a nazi, they'd first have to be identified as caucasion.
We're talking the difference between picking up a bunch of white people because nazis are white, or picking up a bunch of skinheads because neo-nazis shave their heads. It's like if there were a gang shooting and the cops picked up all the black people in the neighborhood bersus all the blacks in gang colors.