During an interview with South Carolina radio host Vince Coakley, Republican presidential candidate Rand Paul warned against Democratic presidential candidate Bernie Sanders’ brand of socialism, arguing that socialist governments usually end up committing genocides.

Paul said that Sanders’ socialism “scares me… I’ve been making and spending more time going after Bernie and socialism because I don’t want America to succumb to the notion that there’s anything good about socialism.”

“I think it’s not an accident of history that most of the times when socialism has been tried, that attendant with that has been mass genocide of people or any of those who object to it,” he continued. “Stalin killed tens of millions of people, Mao killed tens of millions of people. Pol Pot killed millions of people.”

“When you have a command economy, when everything is dictated from one authority, that’s socialism,” Paul said. “But it doesn’t come easily to those who resist it.”