Just came to me, Extra Credits (which is excellent stuff for anyone interested in games in general) just did an episode about propaganda games, which I think is quite relevant here.
http://penny-arcade.com/patv/episode/propaganda-games
One of the scariest/most depressing points is that a lot of what is essentially US military propaganda gets produced simply for profit, simply repeating the most simplistic POV's and talking points out there, over and over again.
(EDIT: of course the US is not the only country producing similar stuff, it's just the point of discussion here.)