Increasing acceptance of gay people is creating a slippery slope to incest, social conservative Michael Brown claims.

Brown, the author of A Queer Thing Happened To America: And What a Long, Strange Trip It's Been and the host of the radio program The Line of Fire, wrote in a op-ed that shows such as HBO's Game of Thrones and MTV's upcoming Happyland are also adding to the momentum toward public acceptance of incest.

“Gay activists constantly tell us that there's no such thing as a slippery moral slope and that the acceptance of homosexuality will not lead to the acceptance of other sexual practices, such as incest,” Brown wrote. “The facts prove otherwise, and it is clear that we are rapidly sliding down the very slope whose existence they deny.”

“In their zeal to justify homosexual practice, these misguided teachers have opened the door wide to incest as well, removing the primary biblical texts that prohibit these sexual unions.”

Brown has previously compared homosexuality to pedophilia, bestiality and “sexual stimulation by faeces.”

Writing at Equality Matters, Carlos Maza reacted: “It's telling that Brown chooses to cite fictional television shows to peddle this bogus link between homosexuality and incest. Much like the dragons and skeletons that roam the land on Game of Thrones, the 'slippery slope' argument is only troubling for people who can't distinguish fact from fantasy.”