The claim quickly went viral on social media, prompting mockery of the candidate.

“There is something deeply sinister about Trump pardoning Charles Manson, even posthumously. Dog whistles of the very worst possible kind,” Williamson tweeted at 12:53 a.m. on Monday morning.

Williamson deleted the tweet later Monday morning after receiving some blowback on social media.

"This never happened. Williamson just tweeted this," wrote journalist Yashar Ali to his nearly 500,000 followers. "This is a woman who gets furious when she’s told that she’s unserious and not prepared to run."

This never happened. Williamson just tweeted this.



This is a woman who gets furious when she’s told that she’s unserious and not prepared to run. pic.twitter.com/3uC8Nqfidj — Yashar Ali (@yashar) December 9, 2019

Marianne Williamson learns nothing good can come from tweeting at 12:53 a.m. https://t.co/OfobJzkOIc — The Daily Beast (@thedailybeast) December 9, 2019