mmckenna
I ♥ Ø
It's all about finding a way to keep the public from looking into the public servant's job. Departments that have nothing to hide haven't encrypted. I'll let you make your own decision on those that have. I am all for encrypted tactical channels, but everyday dispatch should be in the clear unless you have something to hide.
No, that's not what it's "all" about.
There are many ways to see into what public servants do. Scanners are just a convenient way for the relative masses to participate.
Even with encryption, some departments still allow pre-arranged public "ride alongs". Tours are available of some agencies. Talking directly to officers, overhearing their radios, all ways the public can still be in on what's going on.
And, 2 way radio doesn't carry all the information that gets exchanged. Even if some politician gets encryption blocked, agencies will just switch to sending data via terminals or sensitive information via cell phone. All thing the hobbyists do not have access to.
It's about controlling the release of information, but not just the way you think. Controlling public reaction to active situations is one reason I've heard. Specifically having to do with school shootings. Scanner listeners/streaming service release information to the public, often without having the full picture of whats going on. That generates panic. Panicking public is bad. Encrypt traffic, let the professionals control the scene the way they need to, let PIO release information in a controlled fashion.