Facebook and the killer... Free speech gone mad?

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• IOL : 'Callous murderer' a hero on Facebook... Even UK Prime Minister David Cameron has become involved after Facebook refused to remove messages of support for the gunman. Apparently a Facebook spokesman said: "Those who think he is a hero are entitled to their opinion." Makes you wonder exactly how "pro" those same people would have been had it been one of their loved ones being gunned down or blinded in cold blood, doesn't it? But what do you think - should there be limits to free speech in cases like this, or any subject, or on no subject?