The biggest obstacle would be to avoid being co-opted by the usual crowd of spin doctors and propagandists.
Once those folks take over, the majority of people tune out the channel, whatever channel that is. And rightly so.
That egypt banner looks kind of photoshopped, but it's still pretty awesome.
I don't know if this will work as well in the United States. I think the majority of people are more pre-occupied by more important issues like who should win American Idol, the cast of Jersey shore, what shoes Kim Kardashian recommends. Americans have no time for political expression...