You don’t see Postman Pat having a quick scan, do you?

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Somebody made a very fair point this week over whether the companies that run social media websites should be scanning them for terrorist talk.

Debate has been sparked by revelations that Lee Rigby’s killers discussed murdering a serviceman on Facebook.

Digital communication is sent via a third party, where it would be easy to scan a message for all kinds of criminal content. But so is the post and you don’t see Postman Pat having a quick scan before his rounds.

It is against the law for anyone to read the post that gets delivered to your house. If the killers had corresponded by letter, this debate wouldn’t be happening.

Lee Rigby’s murder was reprehensible, but the privacy of a nation should remain sacrosanct.