The Pope has said there are limits to freedom of expression when religion is insulted.
Aboard a plane taking him from Sri Lanka to the Philippines during his Asian tour, Pope Francis, who has condemned the terrorist attacks in Paris, said: "You can't provoke, you can't insult the faith of others, you can't make fun of faith."
In a conversation about the attack upon the Charlie Hebdo office and a kosher supermarket in which 17 people died, he went on to say:
I think both freedom of religion and freedom of expression are both fundamental human rights.
Everyone has not only the freedom and the right but the obligation to say what he thinks for the common good ... we have the right to have this freedom openly without offending.
[Turning to an aide] It is true that you must not react violently, but although we are good friends if [the aide] says a curse word against my mother, he can expect a punch, it's normal.
You can't make a toy out of the religions of others. These people provoke and then (something can happen). In freedom of expression there are limits.
The Pope insisted that anyone using religion as an excuse to murder was "an aberration".
"Let's consider our own history. How many wars of religion have we had? Even we were sinners but you can't kill in the name of God," he added.
Meanwhile, here is a video of the Pope's hat flying off his head when he arrived in Manila.