The level of professionalism has gone up so much in the past 40 years (at least in Northern cities) that it's like a completely different animal. Used to be, the guy from the people you hung out with who became a cop was the last guy you'd want with any authority. Now, the young people going into the academy are first-rate. I deal with them every day, living two blocks from the Chicago Police Academy.
I agree. Cops seem a lot more sensitive to civil rights these days. However, I also live in Chicago and last year had my phone confiscated by the police for videoing an arrest on Division and Rush. I got my phone back after the cops erased the video. I say yes to Google Glass for cops.
Allowing the general public to see the video without a warrant means people can spy on you (using the government cameras) and therefore invade your privacy.
That's true but it's my understanding the courts have ruled that there is no expectation of privacy in a public place. If you don't want to be recorded, stay home. I think this page sums up the current state of the law: http://www.aclu.org/free-speech/know-your-rights-photographers
The government sales of the free spectrum to the highest bidder is one of the biggest scams ever. Carrier-less mesh networking technology has been a viable alternative for a long time ( http://en.wikipedia.org/wiki/Mesh_networking ) but the government persists in licensing the most useful spectrum frequencies to the highest bidder for billions of dollars ( http://wireless.fcc.gov/auctions/default.htm?job=about_auctions ) while restricting the unlicensed spectrum like 802.11 to limited frequencies with severe power restrictions.