According to the London Times, the children featured in an atheist advertisement calling on families to bring up their children without religion were children brought up with religion. Not only that, but the children in the atheist ad were, in fact, from an evangelical Christian family.
The ad features the smiling faces of two happy children with the slogan, "“Please don’t label me. Let me grow up and choose for myself.” Only trouble is that Charlotte and Olly, according to the Times, "are from one of the country’s most devout Christian families."
Looks like these atheists grew up, but it might still be a good idea to let someone else choose the photos the next time.
HT: Uncommon Descent.