I think that, in order to access the posts directly through the graph api, you have to prepend the user id to the post id you see in the facebook url.
You're accessing the end-point of the post incorrectly. Every object on Facebook has a unique ID. Right now, it just so happens that they form it by appending different IDs together (your post is an example, _, and for a comment on that post it'd be __).
Facebook hasn't made public acknowledgment of this (not that they really have to, it's obvious) which makes me leary to rely on that paradigm for accessing data within the graph. This is because Facebook could change it at any point, and the fact that they haven't said "yeah append these 2 ids together and you can get something meaningful from this part of the graph" means they won't have to notify anyone about the change, you could just wake up one day and your app be completely broken and you'd have to find a work around quickly and while suffering down time.
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.