This article has some of the more compelling insights on the Charlie Hebdo case.
There’s a perfectly good reason not to republish the cartoons that has nothing to do with cowardice or caution. I refuse to post them because I think they’re racist and offensive. I can support your right to publish something, and still condemn what you publish. I can defend what you say, and still say it’s wrong — isn’t that the point of the quote (that wasn’t) from Voltaire? I can hold that governments shouldn’t imprison Holocaust deniers, but that doesn’t oblige me to deny the Holocaust myself.
We lose our ability to imagine political solutions when we stop thinking critically, when we let emotional identifications sweep us into factitious substitutes for solidarity and action. We lose our ability to respond to atrocity when we start seeing people not as individuals, but as symbols. Changing avatars on social media is a pathetic distraction from changing realities in society. To combat violence you must look unflinchingly at the concrete inequities and practices that breed it.