@BillW,
This is not exactly the right thread.... but I must respond to this.
White Supremacists can't yell "FIRE" in a crowded environment. White Supremacists can't threaten imminent harm Neither can you or I.
However, White Supremacists can claim that Hispanics are vermin who are invading the United States to steal White Christian babies for the Jews who are controlling the world.
I think you are going to have legal trouble holding White Supremacists to a different standard than anyone else... either with speech or with guns. The United States operates under that principle of "innocent until proven guilty", and being an racist asshole isn't a crime.
We are going to have to find a better solution.