Signposts

The sign clearly indicates that one is not to bring guns into the public space beyond, even if one is legally entitled to do so. But some people just ignore the sign. They just want to shoot people, and it's best really if no one around can defend himself/herself. So, I'm sure the friendly signs were welcome to him. And maybe he was confused because the rifle he was carrying didn't really look much like the picture in the red slash. Anyway, the strategy works well because the sheep rarely look up.

There's a reason why you don't need to post keep-out signs around your average star system.

This is a sign of something. Polygamy would be much more manageable in heaven, of course.

And a sign that new (actually old) tactics are working in Iraq, are detailed (pdf) here.