So I consider it positive when large numbers of people loudly invoke this principle, as has been happening over the last 48 hours in response to the horrific attack on Charlie Hebdo in Paris.

Usually, defending free speech rights is much more of a lonely task. For instance, the day before the Paris murders, I wrote an article about multiple cases where Muslims are being prosecuted and even imprisoned by western governments for their online political speech – assaults that have provoked relatively little protest, including from those free speech champions who have been so vocal this week.

I've previously covered cases where Muslims were imprisoned for many years in the U.S. for things like translating and posting "extremist" videos to the internet, writing scholarly articles in defense of Palestinian groups and expressing harsh criticism of Israel, and even including a Hezbollah channel in a cable package.

That's all well beyond the numerous cases of jobs being lost or careers destroyed for expressing criticism of Israel or (muchmore dangerously and rarely) Judaism. I'm hoping this week's celebration of free speech values will generate widespread opposition to all of these long-standing and growing infringements of core political rights in the west, not just some.

Central to free speech activism has always been the distinction between defending the right to disseminate Idea X and agreeing with Idea X, one which only the most simple-minded among us are incapable of comprehending. One defends the right to express repellent ideas while being able to condemn the idea itself. There is no remote contradiction in that: the ACLU vigorously defends the right of neo-Nazis to march through a community filled with Holocaust survivors in Skokie, Illinois, but does not join the march; they instead vocally condemn the targeted ideas as grotesque while defending the right to express them.