My deepest sympathies to the friends, families and colleagues of the Charlie Hebdo journalists who were murdered by religious fanatics.
Freedom of speech includes the right to peacefully express views others may find offensive. Mere causation of offence should not be a crime, let alone used as an excuse for murder, riots, violence or intimidation.
If we let the risk of causing offence silence us, we allow those who would react violently to anything they dislike to dictate what we say, and freedom of speech thus dies.
It seems to me that the murdered journalists at Charlie Hebdo bravely understood this and sadly paid with their lives. Let us hope the perpetrators are caught.