Serious questions:
As a white, do you still respond to the word, "racist"?
Does it really mean anything to you?
Do you know where the very word itself -came from- in history?
As a white, if someone calls me a "racist", it tells me about the person I am dealing with:
1: They don't know me.
2: They have made a judgement about me without knowing me.
3: That judgement is in error.
As such, regardless of race, creed, or color, national origin, religion, or other factor, they have told me I am dealing with a superficial person who has incorrectly judged me in the absence of facts.
With such an exemplary display of ignorance and prejudice, I would hazard to guess that they are projecting, and are themselves "racist".