Hedges: If you spend time as I have in Gaza, Iraq, Yemen, Algeria, Egypt and Sudan, as well as the depressing, segregated housing projects known as banlieues that ring French cities such as Paris and Lyon, warehousing impoverished North African immigrants, you begin to understand the brothers Cherif Kouachi and Said Kouachi, who were killed Friday in a gun battle with French police. There is little employment in these pockets of squalor. Racism is overt. Despair is rampant...