|"Insult my mother, and get some of this"|
At the same time, I would suggest that very few of us would immediately think of committing multiple murders in these circumstances.
The key point is' how far is acceptable?'
It is not acceptable to deliberately insult and be offensive about a person's religion, even if you believe it to be a false one (I see the Bones has written a good piece on this). After all, at least here in the UK, were you to be similarly offensive about someone's race, sexuality, disability, etc., you would be very likely to find yourself in court). Kudos to the Holy Father for speaking out on this!
Of course, equally, there is also no way in which excessive reactions to insults can be justified. No way is it acceptable, for example, to murder someone because they specialise in publishing cartoons which aim to offend any and every group they can (as this post by Fr. Blake and this one by the Bones show).
It seems we now live in an age of sometimes inconsistent extremes, where to even breathe a word on certain subjects is seen as a sort of secular anathema, while to show righteous indignation is 'restricting freedom of speech'; where some are too scared to react to anything while others go way beyond extreme, and commit atrocities.
I am put in mind of the final lines of this old song by the Dubliners, from an era when Ireland was rather less settled than today, and which tells of some of the earthier aspects of Irish life: the line goes like this -
'We used to solve our differences by a digging match and a jar,
But now we're all playing 'Bang-Bang'. That's going too bleeding far!'
Perhaps it was easier when you could settle a score by inviting him outside for a bout of fisticuffs, and then, crucially, when the matter is settled, having a drink with him to show there was no lasting grudge. I don't know. I do wonder if, during the short period in his earlier life when he worked as a club 'bouncer', the Holy Father ever saw disagreements settled like this.