[jfalcon]

Often people are stopped using a premise of what's called a "Terry Stop" (https://en.wikipedia.org/wiki/Terry_v._United_States) which permits police to briefly detain a person based on reasonable suspicion of a crime. If new reasonable suspicion for a different crime arises during the stop, that new crime can be investigated, provided the entire stop's duration is not prolonged beyond the time that the original stop would have taken.

And body cameras suck ass in terms of audio, they control when it's turned on and off, etc...

The best defense is to film them as well. Have cameras in your vehicle and home that stream directly to the cloud. Make sure that all the dialog is recorded.

Cops will do what they do - there is no stopping that at the individual level.

But what you can do is make sure that every movement and word is recorded for later scrutiny for due process. The days of banning cameras outright is gone, the data is sold and they purchase it. The only way to handle the invasion of privacy is to control the information.

Radio scanners made in the US today have a block in the 800Mhz range while everywhere else, that is not the case - reason? Newt Gingrich being caught talking this same shit over an analog cell phone. Yet, we still live with the stupid laws long after the technology, their antics or political relevance have moved on.