The problem here is the disparity of power. It should be legal for people to record the police, but not necessarily for the police to do the same.
Dump it out of a buffer? Or store it, and process it with number plate and face recognition software?
Living in UK (bafflingly high number of CCTV) cameras makes me gently wary of this kind of surveillance.
Having said that I'm in favour of anything that helps prevent abuse by police officers. I used to trust police but recent scandals in UK prove that corruption and blatantly illegal practices are common.
Police (ordinarily) cannot throw you in jail without probable cause. If you're taped committing a crime, members of the public can just forward the tape to the police, and you'll end up in jail anyway.
If you are in favor of mass surveillance, you should at least argue for a drastic simplification and excision of laws from the books.
LOL. Have you missed the hundreds of stories posted in forums, newspapers and websites?
This is untrue in many, many places. Some states require consent (to record another). There are many restrictions around infrastructure and specific events.
Police go into private places.
The police regarding all interactions is something a lot trickier, because they have much broader influence.
It's a matter of scale.
Got pulled over and warned for (barely) speeding in Texas once. Based on US cop horror stories I'd read, I was so nervous I was almost shaking but the guy was perfectly polite and friendly.
There are many places in the US where you will have no issues whatsoever from police while in other areas an encounter may not turn out so well.
I'm sure there are similar issues throughout the world if one bothers to look for it.
I would say one difference in the US that's popped up lately is that the increased use of technology in our daily lives exposes the fact that there are many bad apples in the barrel, which makes the whole barrel suspect.
Plus, for many people, the fact that the police tend to style themselves after the military these days tends to worry and bother people.