From here:

An atheist billboard along Billy Graham Parkway?

Yep, there it is – “One Nation Indivisible,” with the “under God” left out – high atop the parkway, near Boyer Street.

But “no, no, no,” it wasn’t intended as a slap at the world’s most famous evangelist, said a spokesman for Charlotte Atheists & Agnostics.

“It just kind of happened that way,” said William Warren, a spokesman for the group, which is part of a statewide coalition of nonbelievers that is placing the same billboard in five other cities.

It is much more ambitious than a dig at Billy Graham: it’s a dig at God. Charlotte Atheists & Agnostics left out the “Under God” from the sign to demonstrate that they too can be patriots in a nation under – nothing at all.

I’m not sure why they would think anyone cares, but the eagerness to demonstrate self-worth seems indicative of a deep seated self-doubting insecurity, thriving in spite of its obvious evolutionary disadvantage; perhaps God put it there.