Aren't children meant to be naturally curious? Ours ask questions, which lead to discussions about what's happening in the world. Like how does grandma have money if she doesn't work, why are library books free, why are those people rioting, why is my teacher on strike, what happens if you lose your job, what is a terrorist etc. A lot of those would come up even if you didn't let them watch the news or read the paper. Do the posters who think children shouldn't know about politics just ignore those questions? Personally I'd rather let them watch the news than watch Eastenders or Corrie, (which to the untrained eye just looks like bunch of people screaming at each other and having affairs).
We do eat together every night and if there's something going in the news we might well talk about it at the table. My 9 year old asked his uncle what he thought of David Cameron's leadership, which he thought was very funny (he doesn't have dcs). My 12 year old has just read 1984 and animal farm and is talking about why communism won't work. She also was concerned about benefits cuts after watching a programme on it.
Ours got a lot more interested in the news when we had a newsworthy event here which meant our town was on blanket news coverage for 3 days. Gordon Brown and some of the Royals came, so they got a good chance to see them and realise that the news was actually real and about things that matter to them.
I am wondering if kids tv, computer games etc, makes them less likely to watch 'adult' programmes, to gain general knowledge from. When we were kids there was less choice and you were likely to watch whatever your parents were watching.
When they get home I will be quizzing mine to find out what they know.