Except now the trash has publicly shown their ideals, and made them know. Showing up to support these groups in public is akin to posting your support for white supremacy on Facebook. Most actual employers can and would fire you because they feel that as an employee you represent your company in public.
Oddly enough most companies don't want to be associated with the KKK, or Neo-Nazis. I can't fathom why. /s
The advice for them should be, if you want to keep your job continue to be a closet white supremacist and don't parade around in public as one. Actions have consequences in the real world oddly enough and supporting white supremacy is one such action. Be an alt-right hero/troll online anonymously because most business have a business to run and don't want your shitty behavior tainting their brand.