"But I tell you not to resist an evildoer. On the contrary, whoever slaps you on the right cheek, turn the other to him as well." Matt. 5:39. I think you are correct, the Pope has made a mistake about what is expected of him. But, I think he has made a second mistake equating a verbal attack on a religion with a personal insult too. The personal insult is an opportunity to love your enemy and imitate Christ. The insult of a religion is much more a matter for leaving vengeance to God. In the case of the personal insult, throwing a punch is a failure to keep your temper and failing to be strong in serving God through love. It is a temporary lapse. The second case involves an extra step of appointing oneself God's instrument of vengeance. This is a prideful and much more intentional move. Pride is a much more damaging thing to succumb to compared to temper. Ultimately, this has little to do with freedom of expression and much to do with very different dangers to the soul of the person reacting to the expression. Freedom of expression has little to do with either example since it is governments which guarantee that. And, a charge of assault for the punch and murder and conspiracy for the vengeance turn out to be the practical responses of government, pretty much regardless of the occasion of the crimes.