Ben Stein on Tuesday claimed policies advocated by freshman lawmaker Rep. Alexandria Ocasio-Cortez (D-N.Y.) “invariably lead to bad things,” including genocide.

The actor, former speechwriter to President Richard M. Nixon, and political commentator even made comparisons to Adolf Hitler.

Ocasio-Cortez has made headlines for advocating higher marginal tax rates of up to 70 percent on earnings past $10 million in income as well as a “Green New Deal” to tackle the climate crisis.

But in a Fox Business clip posted online by Media Matters, Stein claimed her democratic socialist politics will lead to dictatorship and genocide:

“We have a society in which there are an awful lot of people who have no idea that Stalin, Hitler, Mao Tse-Tung all came to power promising the same kinds of things that Ms. Ocasio-Cortez is promising. And it led to mass murder, it led to dictatorship, it led to genocide. These promises are old promises and they invariably lead to bad things.”

Stein said the current system “works extremely well” and “allows people to make something of themselves instead of oppressing other people” as they try to earn money.

On Fox Business, Ben Stein compares Alexandria Ocasio-Cortez's rhetoric to Hitler, warns about mass murder and genocide https://t.co/hxW8H3NdwSpic.twitter.com/kaQvzACaWf — Media Matters (@mmfa) January 23, 2019

“Making money is one of the most of harmless things there is to do in the whole world,” he said. “And that’s what our society is about.”

Stein added:

“It’s not about ordering people around, putting them concentration camps. What do you do if a person is a richer or poorer person? What do you do? Do you take him away? Do you shoot him? Well that’s what the communists tried, it didn’t work out very well for them.”

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The comments didn’t sit well on Twitter:

New game show: "Tax Ben Stein's Money!" — Stefan Sirucek (@sirstefan) January 23, 2019

Ben Stein's party literally built internment camps for children. In the United States. https://t.co/qLfJziYrTd — Alex Wild (@Myrmecos) January 23, 2019

We failed to take away Ben Stein’s money when we had the chance. — Annika Barranti Klein (@noirbettie) January 23, 2019

Ben Stein to America: Be poor and be happy you are. — Michael Rashkin (@mhyke926) January 23, 2019

Ben Stein says this is Hitler promising healthcare for all. pic.twitter.com/w4ZJnPd3RA — Jacked Kerouack (@JackedKerouack) January 23, 2019

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This article originally appeared on HuffPost.