Firearms, weapons of any kind, ammunition (either real or simulated), explosives of any kind (including fireworks), knives, blades, or sharp objects (of any length), aerosol sprays, coolers, thermal or glass containers, mace, pepper spray, sticks, poles, pocket or hand tools (such as a leatherman), packages, backpacks, large bags, duffel bags, suitcases, laser pointers, posters, signs, placards (including supports structures), animals other than guide dogs or service dogs assisting handicapped individuals, strollers, chairs, umbrellas, alcoholic beverages, and any other items at the discretion of the security screeners that may pose a potential safety hazard.
[Bold text, mine.]
Note - it's not just 'support structures', but posters, signs, and placards. This shit is ridiculous. Fascists. Maybe the prez is afraid of paper cuts. Or maybe he thinks we're going to make him read something.
The true reason, of course, is Bushco doesn't want anyone out in tv-land to know there are millions of people who vehemently oppose hit elitist, pro-rich agenda. Our posters are not a threat to Bush's physical security, but they are a threat to his policies. If the tv-land audience sees him being disrespected, they'd realize he wasn't a king - and wouldn't be able to so easily deify him in their minds. This would, in turn, lead them to question his policies. That, of course, would be the worst of all possibilities for Bushco, which is why they'll do everything in their power to hide us dissenters from public view.
I've got my digital camera. Let's get it on!