Mahmood Mamdani said this quote

“ I have written this book with the conviction that the response to injury does not have to be vengeance and that we need to distinguish between revenge and justice. A response other than revenge is possible and desirable. For that to happen, however, we need to turn the moment of injury into a moment of freedom, of choice. For Americans, that means turning 9/11 into an opportunity to reflect on America's place in the world. Grief for victims should not obscure the fact that there is no choice without a debate and no democracy without choice. ”