As someone else has posted on this thread, when it comes to trampling on privacy and rights, I fear Little Brother (do-gooders & nanniers) as much as Big Brother.
Gone are the days when cops had the ability to excercise judgement in performance of their duty.
When I was 16 a couple of undercover cops watched my buddies and put a case of beer in the car at the grocery store. They pulled us over and after talking to us determined our lives would probably end if our parents found out. Instead of taking us home or to jail they made us pour each can into the gutter.
At age 18, a party I was at off of the Blue Ridge Parkway got busted up by a Ranger. He marched everyone out to the parking lot and asked who was driving. When all the drivers had been identified he checked each one and took the keys from those who looked drunk and gave them to the those who were not and told them to drive. We left the Parkway in a caravan with a blue light escort.