Kentucky Senator Rand Paul is no stranger to violence brought against him, and he’s worried our political climate may drive some to deadly violence.

According to The Hill, Paul sat down for an interview and expressed his worries that an assassination may be just around the corner due to the amount fear-mongering, vitriol, and hatred being spurred on by political leaders:

Paul, during an interview with a Kentucky radio station, said he was concerned that there “is going to be an assassination,” after a few tense weeks around the Capitol because of the Supreme Court fight. “I really worry that someone is going to be killed and that those who are ratcheting up the conversation … they have to realize that they bear some responsibility if this elevates to violence,” Paul said.

Paul went on to note that many of the people willing to engage in violence are “unstable” and that “we don’t want to encourage them.”

“We have to somehow ratchet it down and say we’re not encouraging them that violence is ever OK,” said Paul

Paul called out Cory Booker in particular, who encouraged his followers to get up in the faces of Republican politicians:

“I think what people need to realize is when people like Cory Booker say ‘get up in their face,’ he may think that that’s OK,” Paul said. “But what he doesn’t realize is that for about every 1,000” people who “might want to get up in your face, one of them is going to be unstable enough to commit violence,” Paul added.

Paul’s wife Kelley has previously called out Booker for his spurring his followers to mob tactics, noting that she’s seen what that kind of thing leads to by witnessing what has happened to her husband in the recent past, including his being attacked by his own neighbor, as well as Paul surviving an assassination attempt alongside his fellow Republicans.

Sadly, not too many leaders on the left seem to be walking back their instructions to their voters. In fact, on Monday, Hillary Clinton encouraged those listening to her CNN interview to remain uncivil with the GOP because they’re trying to ruin everything, and noting that Republicans only recognize strength.

Already, we’ve seen several examples of violence and mob tactics being used against others, including the mob harassment of Ted Cruz, Charlie Kirk, and Candace Owens. We’ve also seen Antifa take over a street, and threaten violence to those who disobeyed them.

Paul has every right to be afraid, as we continue to see intimidation and violent tactics from the left. Democratic leaders should heed Paul’s warning. He’s already been in the thick of the end result of too much vitriol.