[iontheball]

Seriously, though, isn’t this a bit of an extreme over-reaction?

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My hunch is there is more to this story. I read that the police removed most of the protection they had been providing at Charlie Hebdo six months before the massacre. No one has indicated who made that decision but, on hindsight, it clearly was reckless. Note, he killed himself after meeting with some of the survivors.

[KosmicKitty]

I think your theory has the best fit for now. Maybe the guilt drove him too it.