Blake SheltonPETA now has an ally in its war against Blake Shelton and his tweets.

It seems GLAAD (Gay and Lesbian Alliance Against Defamation) is angry at the country superstar for a Twitter post on which he rewrote a Shania Twain lyric (from 'Any Man of Mine') into what the organization deems is a "violent, anti-gay statement."

The controversy all started with this tweet from the singer, who's one of four coaches on NBC's runaway hit, 'The Voice', "Re-writing my fav Shania Twain song ... Any man that tries Touching my behind He's gonna be a beaten, bleedin', heaving kind of guy ... "

Blake has been rewriting a lot of country songs lately via Twitter ... but none has gotten even a fraction of the response this one did, as the singer was soon flooded with people questioning whether he's homophobic.