Brian Brown, president of the National Organization for Marriage (NOM), has described gay marriage in California as “illegitimate” in response to a California Supreme Court decision to toss out a legal challenge to reinstate the state's previous marriage ban, Proposition 8.

On Wednesday, the hight court rejected the petition, considered a last-ditch effort by most.

(Related: California Supreme Court denies gay marriage Prop 8 proponent's petition.)

NOM was heavily involved in promoting Proposition 8 in 2008.

“The ruling is very disappointing but not unexpected,” Brown said in a NOM blog post. “Same-sex marriage in California is illegitimate, imposed by judicial activists in direct opposition to the expressed will of the people. California, the nation, and the rule of the law are worse for it.”

Gay nuptials resumed in California in June after a Supreme Court decision left in place a 2010 circuit court ruling declaring Proposition 8 unconstitutional. Supporters claim that Proposition 8 remains valid because such a court cannot overturn a statewide law.

“The way that activist judges have dealt with Proposition 8 is a travesty of justice and undermines the rule of law and the democratic process itself,” Brown continued. “The legitimate votes of 7 million Californians, and their fair-minded, reasonable position that marriage should be defined as the union of one man and one woman, have been trampled underfoot by derelict politicians and activist judges. However, this is not the end of the debate. No judge or politician can redefine what God has created. NOM and our allies will work to make sure the people of California, and other states where marriage has been redefined have a voice speaking for true marriage. So-called same-sex 'marriage' is a political creation; it doesn't exist in reality. Eventually it will fall, and we will restore natural marriage in California.”