The issue is that you are asking for type=client_cred which tells Facebook that you don't want access token for a user, but an access token for the app. This is used for doing things like accessing insights, the realtime updates API, and public data. If you want to get user data, you should not be passing that flag.
You say you're using the PHP SDK but I don't see any mention of it anywhere in your code.
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.