Paint a scenerio, I'd like to hear it.
BTW, fear of a real danger is not paranoia. OTOH, ignoring real danger is naivity.
I've been through this argument before, so let me just give the Readers' Digest version: the war against terror is won. Measures within the PA deemed appropriate for continued law enforcement and national security are kept, others are allowed to expire.
If you're really interested in an opinion and argument that is an alternative to the fear-mongering of the PA opponents, I invite you to find other threads about the subject and note the curious lack of evidence that the PA has been or is being used in an unconstitutional manner.