Yes, the pen is mightier than the sword. If the pen had not been mighty (even if only soft HB2 pencils), there would not have been such a reaction to stop the powerful pencils wielded by cartoonists at Charlie Hebdo, Paris.
Those pencils will continue to draw, and huge amounts of words will now be written to condemn the intolerant bigots who thought murder was the answer to the freedom of speech we value here in the West.
Free speech includes freedom to insult and offend people.
People who take offense at insults are the ones trying to stop freedom to speak critically, but they cannot do it by reason.
"The voice of reason is soft," so goes the epitaph on Sigmund Freud's grave, and HB2 pencils are soft even when they produce stinging drawings.
But people who display public hatred against the basic human right of freedom of religion might need to learn how their attitudes can change to freedom FROM religion. And that is intolerant and mitigates against freedom of speech, because they wish to destroy the religions of some people, and to flush their religious scriptures down the toilet. Sometimes the pen, and the pencil, lead to a backlash against the freedom to write whatever you like; invariably by those who think might is right.