Think before you tweet.

Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.

“Dr. Fauci lied about masks in March,” he wrote.

Dr. Fauci White House briefing

PerPeople, the doctor was partly concerned about a mask shortage as the pandemic left hospitals scrambling for supplies.

Is there a Bible verse for that you could hide behind?"

Celebs weighed in, too.

Marco Rubio receives vaccine

Sarah Silvermanattackedthe “lying” accusation: “Fauci didn’t know enough in March.

I’ve worn my mask, taken care of COVID sick patients, and never questioned science!

Yet somehow you are vaccinated before me!”