Maggie Gallagher, founder of the National Organization for Marriage (NOM), has claimed that Supreme Court Justice Anthony Kennedy has proclaimed a “fatwa” against gay marriage foes.

Kennedy wrote the majority opinion that struck down a portion of the Defense of Marriage Act (DOMA) as unconstitutional. Without the provision, the federal government must recognize the legal marriages of gay and lesbian couples.

“Are last week's rulings on marriage as monumental, with the staying power, of Roe v. Wade?” National Review's Kathryn Jean Lopez asked.

“What you are really asking is: Will we concede the legitimacy of Kennedy's fatwa against us, or will we respond with a sustained opposition – legal, political, cultural, and of the moral imagination?” Gallagher answered. “Will they succeed in persuading us to accept the second-class status Kennedy lays out for us? Not me, what about you?”

In a separate radio interview on Monday, Gallagher claimed that the Supreme Court had declared “war” on “at least half of the American people.”

“This is a head-on declaration of war against at least half of the American people who think that marriage is between a husband and a wife,” she told Lars Larson.

Gallagher also claimed that the court majority could not say how DOMA violated the U.S. Constitution.

The court said that DOMA is “contrary to some provision in our Constitution which we can't name but it's so bad that we're just gonna say you can't do that,” Gallagher stated.

However, Kennedy's opinion states that “DOMA is unconstitutional as a deprivation of the equal liberty of persons that is protected by the Fifth Amendment.”