I teach at an Islamic school, and I am in awe of how testimony has opened the eyes and hearts of my students and inspired them to fight injustice. This is particularly amazing considering the Shoah is not even part of the curriculum in many Arab countries. When I asked my class why testimony has affected them so deeply, their response was: “Testimony teaches us that the world isn’t about us vs. them. It is about how WE can make the world a better place by not being bystanders.”

Paris. The way we think of that beautiful city has changed. That's what they want. They want us to think about things differently, to use Paris as a symbol of bloodshed and fear, not the one we know and love of liberty and culture. That is the nature of extremism: It tries to change who we are, how we see the world, to change our habits and our patterns of thought, to enjoy our freedoms less, to exert control.