Rep. Nancy Mace (R-SC) was bludgeoned on social media Monday after she insulted President Joe Biden’s appearance at a South Carolina church where worshippers were massacred by a white supremacist nearly nine years earlier.

Mace posted to X at 11 a.m. ET her video response to Biden’s address from the Emanuel African Methodist Episcopal Church — before the 12:30 event had even begun.

“He’s literally using the pulpit of a church where a tragedy took place in order to further divide our nation on race, on gender and on politics,” Mace said. “We’re not going to allow a president to come in here and divide us no matter what…It’s time to go back home, Joe Biden.”

The video outraged viewers who accused Mace, a relatively new and unlikely acolyte of former President Donald Trump, of spreading lies about Biden and insulting the families of those slain on June 17, 2015.

“This is a disgusting slap in the face to the surviving families of the Emmanuel 9, from someone who has opposed gun safety at every turn,” wrote Michael O’Brien, MD.

“There is no low too low for Nancy Mace.”

“It's not an exaggeration to say that virtually everything Nancy Mace says in this video is not true, added Michael A. Cohen — who shares the name with Trump's former lawyer but is not apparently connected.

Read More: 'There's no evidence': ABC host destroys Nancy Mace after she claims Biden 'bribery'

Journalist Aaron Rupar responded with a tongue-in-cheek paraphrase: “Joe Biden ran for president to unite our country. But then I spent three years lying about him. So he failed.”

Bob Moriarty argued Mace’s response given as neither the right time or place.

“Only you, and those consumed with hate, could take a moment of healing and reconciliation and apply the most cynical interpretation,” Moriarty wrote. “How do your words help? It is you who is attempting to further divide. Do better.”

During his campaign speech, Biden condemned Trump for the U.S. Capitol attacks on Jan. 6, 2021, and praised Georgia poll workers Ruby Freeman and Shaye Moss for their fight against his attorney’s defamatory election fraud claims.

He also praised the South Carolina residents who successfully fought in 2015 the hanging of the Confederate flag.

“You brought it down,” Biden said as he pointed toward the crowd. They united in cheers.