The Southern Poverty Law Center (SPLC) on Tuesday filed an ethics complaint against the Alabama Supreme Court justice who called for state courts to resist the Supreme Court's ruling striking down gay marriage bans in all 50 states.

Last week, Justice Tom Parker appeared on Focal Point, a radio program hosted by Bryan Fischer of the Christian conservative American Family Association (AFA).

Parker told Fischer that the Supreme Court ruling was not needed since gay men and lesbians are not being denied their constitutional rights. He said that everyone is free to marry someone of the opposite sex.

He went on to call on state courts to defy the ruling in order to foment a “revival” that will return America to its founding principles.

“The states should be a check on the federal government, and the proper organ within a state to do that versus the U.S. Supreme Court would be a state supreme court,” Parker said. “Now, I doubt that it would be a blanket defiance of all jurisdiction on the U.S. Supreme Court, but in regards to the Obergefell decision where it's clear that they jumped outside of the precedents in order to impose their will on this country, that yes, resisting that decision could maybe start a revival of what we need in this country and return to our original founding principles.”

A case on the issue is currently before the Alabama Supreme Court.

“Tom Parker has a choice: He can be a judge or he can be an advocate, but he can't be both,” SPLC President Richard Cohen said in a press release. “His comments were clearly unethical and driven by his ideological agenda, not his judicial responsibility.”

“It's incredible that Tom Parker, a supreme court justice, would lend legitimacy to a bigot like Bryan Fischer by appearing on his show,” Cohen added, a reference to Fischer's long history of homophobic and racist comments.

The SPLC has also filed a similar complaint against Justice Roy Moore. Parker, a former aide to Moore, once worked at the Foundation for Moral Law, which was founded by Moore and is currently headed by his wife.

(Related: Roy Moore violated judicial ethics in calls to ignore gay marriage ruling, SPLC says.)