Senator Mike Lee (R-UT) spoke out on Wednesday to demand that his colleague, Senator Dianne Feinstein (D-CA) apologize for issuing a statement suggesting that President Donald Trump’s tweets inspire violence.

Lee was referring to comments that Feinstein made the day before during a Senate Judiciary Committee hearing with the CEOs of Facebook and Twitter.

“On Nov. 7, President Trump tweeted this: ‘I won this election by a lot,’” Feinstein said during the hearing. “The warning label that Twitter has applied to the tweet ‘Official sources may not have called the race when this was tweeted’ … Does that label do enough to prevent the tweet’s harms?”

The Democratic senator went on to talk about the November 5 arrest of two armed men near the Pennsylvania Convention Center, where ballots were being counted.

“I’m really struck by it, that people armed with assault weapons as a product of a tweet could rally outside an election office,” Feinstein said. “And I think it’s really a serious issue that needs to be considered and there need to be, once you signal that and people respond to it, it has to be in some way abated or some way pointed out or restructured on the internet itself.”

Lee fired back at Feinstein during the hearing, saying that “the only violence I’m aware of has occurred in connection with Antifa, Antifa’s response to pro-Trump peaceful rally attenders.”

He doubled down on this in a Fox News interview on Wednesday, urging Feinstein to retract her comments.

“You had Washington, D.C., full to overflowing with peaceful Trump protesters, people protesting or signaling their support for President Trump and showing gratitude for them. Not one act of violence was attributed to them,” Lee said. “Meanwhile, you had people shooting industrial strength fireworks into places where they were eating. You had people approaching and beating up and saying vile things and putting people in physical danger, including elderly people, including women and children. All of this was done by Trump-haters, by Antifa people who couldn’t handle the fact that there were people peacefully showing their support for President Trump.”

“So I don’t know what my colleague Sen. Feinstein is talking about, but I thought that was an inappropriate comment,” he added. “Not one act of violence has been linked to President Trump in connection with events surrounding this election and I think she needs to recant her statement and apologize.”