Republican presidential nominee Donald Trump said this week that he believes it is necessary to “fight fire with fire” against the Democratic Party as he warned that the party was “very evil.”

Trump made the remarks in an interview that aired Tuesday with podcast host Lex Fridman while discussing how Democratic presidential nominee Kamala Harris is “a Marxist.”

Fridman sought to defend Harris, claiming that “a lot of people” don’t think that she is a communist, to which Trump said that she was “a Marxist” and so was her father.

“There’s a lot of people that know the way government works and they say, well, none of those policies are going to actually come to reality,” Fridman claimed. “It’s just being used during the campaign to … Groceries are too expensive. We need them cheaper, so let’s talk about price controls. And that’s never going to come to reality.”

Trump warned that price controls could absolutely “come to reality” as they have been used in the U.S. before.

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“Look, she came out with price control,” Trump said. “It’s been tried like 121 different times at different places over the years, and it’s never worked once. It leads to communism, it leads to socialism, it leads to having no food on the shelves, and it leads to tremendous inflation.”

Trump said that he had no problem calling her a “communist” given all of the terms that Democrats label him with, saying that they call him “a lot worse” names.

“It’s interesting though, they’ll call me something that’s terrible and then I’ll hit them back and they’ll say, ‘Isn’t it terrible what Trump said?'” Trump said. “I believe you have to fight fire with fire. I believe they’re very evil people. These are evil people. We have an enemy from the outside and we have an enemy from within. And in my opinion, the enemy from within are radical Left lunatics. And I think you have to fight back.”