Andrew O’Hehir: “Charlie Hebdo is not just some random publication that made fun of Muhammad. It’s something closer to a canary in the coal mine of democracy. It’s a dissident, thorn-in-the-side paper that was once closed down by its own government, in the putative homeland of liberty and equality. It’s a paper that has doggedly sought out the outer edge of acceptable expression, a paper devoted to offending anyone and everyone and to scourging those who hold power over others.”