For instance, leftists are now engaging in their usual paroxysms over virulent, omnipresent racism, i.e. the reaction to the Coca-Cola Super Bowl ad. If you found the Coke ad offensive, then you are the usual hater and racist, blah blah blah to infinity.
My advice: don't defend yourself from such asinine charges. Don't write rebuttals, or waste any time trying to disprove the Commie-left's B.S. If you do, you are merely demonstrating their effectiveness in putting you on the defensive. You are lending credibility to their insults. You are producing the smoke that the naive will believe is a fire.
Personally, I don't give a hoot in Hell what any liberal, leftist or Democrat thinks of me, and neither should you. The only way you can stop them from calling you a racist, is to become a Welfare Slug/Islam Appeaser/Terrorist Apologist/ Tax Until They Bleed/ White-Hating Communist.
Just like them.
P.S. Regarding the link-bait title of this post, the definition of a "racist" is anyone who wins an argument with a liberal.