Facebook, which routinely adds its editorial comments to posts with which it disagrees, recently "fact-checked" a woman's complaint about her reaction to a coronavirus vaccine. Desiree Penrod, 25, said on Facebook after getting vaccinated in early March: "The vaccine is killing me today. My arm hurts, beyond exhausted, headache, stomach cramps and earaches." Penrod also posted: "Multiple people told me that I looked pale today. Yesterday, I was fine but today it's taking its toll on me." Facebook, citing the World Health Organization, added a disclaimer to a post by Penrose, "COVID-19 vaccines go through many tests for safety and...
