Is it possible to access user's wall info without passing his/her access token?

You will need to ask the users to authorize your app for offline access. You will be able to access the user's wall even if the user is offline, but you still need the access token. It is part of Facebook's security measures.

Without token you can only access public information.

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.