An American Idol concert featuring openly gay runner-up Adam Lambert has been picketed by homophobic protesters.

Members of the Westboro Baptist Church were seen outside the venue in San Jose, California, holding signs and reportedly chanting offensive epithets about Lambert’s sexuality.

The group, which believes God kills soldiers in Iraq because of homosexuality, also threatened to picket Michael Jackson’s funeral.

However, ‘Glambert’, who came out in Rolling Stone magazine recently, apparently shrugged off the protest.

According to contactmusic.com, Michael Sarver, one of the ten finalists singing at the concert, told fans Lambert was unconcerned by the group’s chants.

Sarver wrote on his Twitter: “Funny how people think it’s a good idea to mess with a big Texan and his AI [American Idol] family. Adam is just fine, shakes it off and so should we.

“We are together in this thing. You mess with one you mess with all ten. We are strong and we are one. For those outside protesting I say do not judge less ye be judged yourself. Guys don’t mind these people, we are a strong family.”