Democratic strategist Hilary Rosen on Sunday morning dismissed negative perceptions from conservatives of President Barack Obama's endorsement of marriage equality.

Rosen, who is openly lesbian, appeared on ABC's This Week roundtable and castigated those who view same-sex marriage as a threat to its traditional counterpart.

"Sorry, but straight people don't need any help tearing down the institution of marriage," Rosen said. "You're doing just fine as it is. One in three divorces, come on. The irony is that really gay people are looking to do the most conservative thing. They want to fight in the armed forces, they want to protect our country. And they want to join the institution of marriage, loving commitment couples raising children."

WATCH: Video from ABC, which was broadcast on May 13, 2012.

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