Propaganda image visible in the Bioshock Infinite demo.
Propaganda posters given to news outlets.
The posters were part of a gift box that included a box of chocolates and this crow-shaped bottle for Murder of Crows tonic (drinking it gives the player character the power to summon a murder of crows):
You can see video of the gift pack here:
And find more photos of the gift packs here, here, and here.
Finally, check out some of the great buttons you can achieve at the Irrational Games forum:
*Buy Bioshock posters at eBay.