I think there's an element of selective quoting - Cameron is implying that you can be an obvious baddie(TM) but as long as you obey the letter of the law, then legally they can't currently touch you, which is what he wants to change. Think extremist preacher who causes the media to blast the government as inept because said preacher is 'untouchable under this country's weak laws' etc etc...
Clearly though, if not properly thought through, this will be ripe for abuse.
Biting the hand that feeds IT
