Minnesota Vikings punter Chris Kluwe has joined the NOH8 Campaign, which raises awareness and funds for gay rights causes, including ending California's 2008 voter-approved gay marriage ban, Proposition 8.

The campaign tweeted a photo from its Minneapolis photo shoot on Thursday.

“S/O to @ChrisWarcraft from @VikingsFootball for stopping by the #NOH8 photo shoot today!” the campaign messaged to its more than 422,000 followers.

The campaign's Adam Bouska and his partner Jeff Parshley photograph celebrities, politicians, professional athletes and everyday folks with their mouths duct taped and the campaign's familiar “NOH8” slogan often written on one cheek.

Kluwe joined the campaign a week after he came to the aid of Baltimore Ravens linebacker Brendon Ayanbadejo, whose gay marriage advocacy had come under attack from Maryland Delegate Emmett C. Burns Jr.

Burns attempted to silence Ayanbadejo with a letter to Ravens owner Steve Bisciotti asking that he “inhibit such expressions” in support of Maryland's upcoming referendum on a gay marriage law approved by lawmakers. Burns has since reversed course, saying the player has a right to speak his mind.