I would not take my kids to any of them, I do however take my teen to the polls to show him how important it is to vote.
Just for entertainment purposes and out of harms way, I'd take them to an OWS protest. Tea party protests are just a bunch of angry old farts shaking their fists and yelling at the sky. At least with the OWS thing, you can see some cops bust some heads.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.