I've not recommended "militant" designs for this stamp at all, as like you said, it is designed to appeal more to the masses, as it is trying to be more of a beacon to someplace else in the case of a stamp on a letter, not something that tries to grab people's attention when someone is wearing it, etc. and reflective of something more activist (which I think you were referring to my post in another thread.
I'd like to say that's there nothing wrong with *either* of our approaches. It just depends on who the messenger is (putting on a button, etc.) and what their style of communicating is, and what the target audience is. For different contexts either a more activist "militant" (as you describe it) might be more useful, or in others (where you might have more of a captive audience) a more laid back approach might work better.
As I said before, come up with a design and advocate that design. That's why I asked who did the stamp in my sig. This person had a nice idea to build on. Part of the problem is that the one useful image we have of hers on the net works better on a dark background than a light one as he/she also chose to do with the stamp. That's not to say one cannot come up with a design that works on a light background with her image in it. Just that it takes more work, and probably someone with more professional design background and resources, which I was appealing to with my previous post to come forward to help out with this stamp idea. I'm more of a developer than I'm an artist, though I dabble in art quite a bit, so I'm not claiming to have all of the answers here. I basically did these designs for buttons and bumper stickeers to fill a void, since there weren't any to be found on the internet or elsewhere that I could find.
There's a huge variety of anti-Bush stickers out there for different audiences. Help us out and get more designs for Sibel too!
Also, if you want to target your message to people that have a more activist bent towards helping building up your campaign, you might want to post in the newer Sibel Edmonds and other Whietleblower's group, which I think would be useful for helping to hash this out without the thread getting lost quickly.
http://www.democraticunderground.com/discuss/duboard.php?az=show_topics&forum=344