The righteous, harassment-happy bullies at the Freedom from Religion Foundation have one mission, and one mission only--to prank public squares, parks, etc. with their juvenile signs and banners. Here's their standard bit:
The FFRF is dedicated to promoting the separation of church and state. How do they accomplish this? By finding every possible excuse to involve government in issues of faith. That'll do it!
Idiots. Absolute idiots. But I'm sure they're great people, otherwise.