Noting that freedom of speech comes with responsibilities, the US said that violence in no way could be justified to disagreements on freedom of speech.
"There is no act of public expression in terms of free speech that would in any way justify an act of violence. That is a principle that we have reiterated on a number of occasions. I think it's something that the vast majority of the world agrees with.
The Pope yesterday had condemned any killing in God's name, but had also insisted there were limits to freedom of speech and said other people's religion could not be insulted or mocked.
"Freedom of speech is a right and a duty that must be displayed without offending," he had said.
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Earnest also said, "At the same time freedom of expression and freedom of speech also comes with a set of responsibilities," he said.
While the Pope condemned the terrorist attack on the French satirical weekly, he said, "You cannot provoke, you cannot insult the faith of others. You cannot make fun of the faith of others."
However, he added, "One cannot offend, make war, kill in the name of one's own religion - that is, in the name of God. To kill in the name of God is an aberration.