Limits to freedom of expression? The problem of blasphemy

The idea that freedom of expression might have limits is examined in the context of the Charlie Hebdo murders. Authoritative statements including the universal Declaration of Human Rights (Article 19) are revisited and blasphemy laws, defamation of religion resolutions, hate speech laws and recent moves to end blasphemy laws are all discussed. The conclusion is that freedom of expression is too important to be limited because of the sensitivities of religious believers.