A Mississippi chapter of the Ku Klux Klan is supporting Alabama Supreme Court Chief Justice Roy Moore's stand for state's rights and called for members to protest against the legalization of gay marriage.

"The Mississippi Klan salutes Alabama's chief justice Roy Moore, for refusing to bow to the yoke of Federal tyranny," Brent Waller, the United Dixie White Knights' imperial wizard, wrote on Stormfront, the largest online white supremacist forum. "The Feds have no authority over individual States marriage laws."

Moore advised the state's probate judges that they are not required to issue marriage licenses to same-sex couples despite a federal court's ruling striking down the state's ban on same-sex marriages.

He claims state courts are not bound by federal district courts or federal appeals courts on questions of federal constitutional law.

Alabama Chief Justice Roy Moore

"Interference with the right of state courts to make independent judgments based on their own view of the U.S. Constitution is a violation of state sovereignty," Moore wrote in the four-page letter to probate judges.

Montgomery-based Southern Poverty Law Center reported on the Klan's "call to arms" on its Intelligence Project Hatewatch blog. The KKK is a hate group tracked by the SPLC.

Heidi Beirich, director of SPLC's Intelligence Project, said hate groups often attach themselves to certain political issues in an attempt to grow their ranks.

"The Klan is just trying to glom on to a hot button issue that they think other people support," she said in a phone interview with AL.com. "They are hoping to build their ranks by getting onboard with the anti-gay marriage crowd. They are just trying to see if they can make political hay with this issue."

Over the last year and a half, certain KKK groups have attempted to recruit in the Alabama area by hosting rallies and distributing flyers.

Beirich said Klan groups don't release their membership numbers, and she doesn't know if recent recruitment efforts have been successful. The Stormfront forum has nearly 300,000 registered users.

In his Stormfront post, Waller called for "all Klansman and White Southern Nationalist" to wear plain clothes and join in the Christian protests against gay marriage. The post appeared on the United Dixie White Knights' (UDWK) website and later on the largest online white supremacist forum, SPLC reported.

"Members are encouraged to lend a hand, make signs, recruit etc., but leave any insignia, colors, shirts etc at the house," he wrote. "We want to infiltrate these protests and make sure they are kept running in military fashion and not bullied by the outside agitators."