The term “racist” is used so much in this society that I’m not sure what it means anymore. It has morphed into an all-purpose and now mostly empty pejorative. But it still has the potency to destroy people’s lives when used by the media.
As used by the Left today, “RACIST!” means someone you disagree with politically, but for whom you have no logical, rational arguments on the issues under discussion. So they run with the emotion-charged attack.
Every time you see it used, you should immediately think “this person has no argument.”