Buddy Smith, vice president of the Christian conservative American Family Association (AFA), has criticized a campaign pledging not to discriminate against gay men and lesbians, calling it an attack on Christians.

The “We don't discriminate” campaign is a response to a controversial Mississippi law which opponents say allows businesses to discriminate on the basis of sexual orientation.

The Mississippi Religious Freedom Restoration Act, which takes effect July 1, aims to “provide that state action or an action by any person based on state action shall not burden a person's right to the exercise of religion.”

Opponents say the measure could allow businesses and individuals to refuse services to gay people and minorities.

Round blue stickers declaring “We don't discriminate. If you're buying, we're selling” are being displayed in the windows of hundreds of businesses.

“It's not really a buying campaign, but it's a bully campaign,” Smith told One News Now. “And it's being carried out by radical homosexual activists who intend to trample the freedom of Christians to live according to the dictates of Scripture.”

“They don't want to hear that homosexuality is sinful behavior – and they wish to silence Christians and the church who dare to believe this truth.”

Businesses that display the sticker are agreeing “that Christians no longer have the freedom to live out the dictates of their Christian faith and conscience,” Smith added.