The primary response you will get is SQL injection from input not properly sanitized. Another possibility I can think of offhand is allowing scripts to be uploaded and subsequently executed. OReilly has a book on the topic also, oreilly.Com/catalog/9780596006563, Essential PHP Security.
Also check out the PHP security guide - phpsec.org/projects/guide.
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.