Conservative radio host Lars Larson on Monday accused Mary Cheney of subjecting her sister Liz Cheney to the “gay agenda” by pressuring her to endorse gay marriage.

“It's sad Liz Cheney's sister has chosen to make this a public fight, to damage her political ambitions, and to do it in a way that doesn't respect Liz Cheney's personal beliefs and personal values,” Larson, the host of Portland's The Lars Larson Show, said during an appearance on Fox News' The Real Story with Gretchen Carlson. “We hear a lot about personal values from the left, and yet it sounds like, as far as the gay agenda goes, it's take no prisoners and yes is the only answer. And if you don't agree, we'll do everything we can to hurt you.”

Larson's comments were in response to a public scuffle that broke out between the sisters after Liz Cheney, who is challenging Wyoming Senator Mike Enzi in the upcoming Republican primary, reiterated her opposition to gay nuptials during an appearance on Fox News Sunday.

“Listen, I love Mary very much. I love her family very much. This is just an issue on which we disagree,” she said.

Mary Cheney responded in a Facebook post that she was “wrong” and “on the wrong side of history.” Mary's wife, Heather Poe, wrote that she was offended.

(Related: Mary Cheney, wife offended that Liz Cheney doesn't support their marriage.)

“I don't know what the gay agenda is,” guest Julie Roginsky, a Democratic Party strategist, said on the program. “But if she were so offended by the concept of gay marriage, she shouldn't have gone to her sister's wedding. But she did. She apparently claimed she was very happy for her sister Mary. To now come out and say publicly she's opposed to her sister's marriage seems like a political ploy.”

Larson defended Liz Cheney: “That's not what she said. There's a difference between saying I disagree with homosexual marriage – which I disagree with – and saying that I oppose your marriage. … When I speak of the gay agenda, I mean there are homosexuals in this country who say, 'We demand that you not just tolerate, not just accept, but that you endorse what we've done.'”