hmm I believe the effect would be greater if everybody who is already informed starts wearing such t-shirts. idk. you gotta find a way to trigger someone's curiosity. like the mason's all-seeing-eye-pyramid with a sword through it or a bird's view of israel with a nuke-mushroom on it and all being circled in red and 1 red slash going through the nuke and the map and a date like OKTOBER 2008 - BE AWARE or something..
a little like this i mean, just with a nuke-clowd in it or something
http://nomaamstore.com/No_maam.jpg