If you haven’t seen it, now would be a good time to rent the movie, “The Lives of Others”. It’s about an East German government agent who listens to “persons of interest” trying to find dissidents. I highly recommend it.
The "person of interest" phrase, now adopted by US law enforcement, lowers the legal threshold of being an actual 'suspect' in a crime, so that one can be still be a suspected criminal under watch even without any evidence pointing to that. They're not really suspects you see, but they are .... 'interesting'. Sooner or later we will all become "interesting" to 0bama and his brown shirts. You can just feel it in the air.