Minnesota Vikings punter Chris Kluwe has quit writing a column for the St. Paul Pioneer-Press after it gave a tepid nod to a proposed amendment to the Minnesota Constitution defining marriage as a heterosexual union.

“Sent my email to the @PioneerPress informing them I will no longer contribute to their blog network. It will be my last post on the site,” Kluwe tweeted to his more than 130,000 followers.

In its editorial, the paper said it was not taking either side of the issue but appeared to back up pro-amendment supporters, going so far as saying that prohibitions on marriage “are intended to be in the interest of promoting the general welfare.”

In a series of tweets, Kluwe said: “I will not be associated with any organization that tries to pull some bullshit like that. Have the strength of your convictions. My main issue with the Pioneer Press editorial is this: It's a lie. I have no problem with them taking a position I disagree with. What concerns me is them presenting a completely biased piece (word choice, examples used, conclusions) as a neutral position. That's not only irresponsible journalism, it's massively hypocritical. Have the courage of your convictions. Attach your name to what you believe in. Don't try to confuse people through obfuscation and selected presentation of arguments. It ruins discussion, and you should be ashamed. I will not abide lying. A stable society has to be built on a foundation of trust, and that editorial just eroded some of it away.”

(Related: Ad has Chris Kluwe in a bind over “lustful cockmonster” comment.)