Catholic News Service (my emphasis added):

ABOARD THE PAPAL FLIGHT FROM COLOMBO, Sri Lanka
… “Let’s go to Paris, let’s speak clearly,” the pope said. “One cannot offend, make war, kill in the name of one’s own religion, that is, in the name of God.”
The pope said freedom of expression was a “fundamental human right” like freedom of religion, but one that must be exercised “without giving offense.”
Offering a hypothetical example that referred to the Vatican’s planner of papal trips, who was standing beside him as he spoke, the pope said: “It’s true, one cannot react violently, but if Dr. (Alberto) Gasbarri, a great friend, says a swear word against my mother, then he is going to get a punch. But it’s normal, it’s normal. One cannot provoke, one cannot insult other people’s faith, one cannot make fun of faith”…