All of this isn't a million miles away from what Hitler was trying to do.
Can I see the day that simply by mentioning the words bomb, schoolgirl, terrorist, knife, murder, BNP, incest, drugs, in an email/phone call that the authorities could come knocking to 'check you out'? You bet.
The way things are going we will have surgical implants put into our brains, so that any thought of wrong doing will be stamped down on by a spell inside.