This is the real and only solution. Too many black people enjoy arguing with white supremacist as a form of intellectual masturbation.You forgot the best one
Ignore, do not acknowledge and carry on
Treat them as the non-factors they are
White supremacists favorite pastime is wasting other people’s time, especially on the internet. It doesn’t matter how many “black facts” you throw at them or how well you dismantle their race babble and race pseudoscience, their only logic is I’m white and l say so. No amount of facts and data will change their mind.
I can’t until the day when black people learn to disregard them like the crack head in front of the 7/11.