Disobeying, talking back, hiding your hands, running, reaching for things are all good ways to get shot, and the officer will be perfectly justified as well.
In other words, you have a list of offenses that deserve the death penalty. These include disobeying a police officer, regardless of whether the order is legal, heard and understood, or physically possible, as well as disagreeing with a police officer. If I'm using a camera to record what's happening in a police encounter, perfectly legally, and the police officer asks me to hand over the camera, and I either give him a reason why not or just don't hand it over, the police officer is "perfectly justified" in shooting me. (If I do hand over the camera, and the officer destroys it, destroying my personal property and potential evidence in a criminal prosecution, no amount of follow-up with the most cooperative police department is going to fix the situation completely.)
The ONLY legitimate reason to shoot me is if I present a credible and serious threat to the officer or others, and there is no other way to handle the situation. If I"m running away, which is on your capital crime list, I'm presenting no threat to the officer, and if I'm not clearly armed I'm presenting no threat to anyone else.
You are describing a police state, where the police can do what they wish and shoot any dissenters.