[Clint N. Suhks]

What will photoshop tell you?

[Tex-Con-Man]

It is just easier to manipulate the image in Photoshop.

However, I did find this...

http://www.youtube.com/watch?v=nMupwUD8vzk

Apparently, calling all organizations “NAMBLA” is a running gag on The Daily Show. But since I never watch the show, I wouldn't know. (I have to admit I laughed at the video.)

So, my guess is the sign was an “inside joke”, and not really NAMBLA.