The Lee Rigby inquest just happens to be coinciding with the government trying to push through their latest Snooper Charter of surveillance laws [1].
You don't even have to be particularly cynical to put two and two together...
It's pretty disgusting of the government to exploit Rigby's death by scapegoating the blame for not catching this guy - who was known to MI5 - on internet firms.
PS: Some claims neither need citation nor can possibly provide it. Are you seriously suggesting someone get a quote from David Cameron saying "I'm a sneaky bastard who's going to exploit this situation"?
EDIT: I just realised you may be referring to the "recruitment" part of that quote. Apparently MI5 tried to recruit one of the killers as an informant when he came back to England after being jailed in Kenya for trying to join a terrorist group. Here's a reference to the report [2] page 44-ish. It's all rumours as it's national security, ie. neither confirm nor deny, but there's usually no smoke without fire on these things...
