Why we "wake up" to a police incident?
Well maybe because generally we don't expect that police will "shoot" people who supposedly aren't threatening themselves or others. It gets our attention.
We have become accustomed to reading of gun fights in bars and neighborhoods, perps shooting perps over drug deals, domestic disputes in the home ending in gun violence, that sort of thing. Those make the little "Police Beat" feature of our newspaper, second section, maybe page 7, toward the bottom of the page. Who wants to go to a domestic dispute call, woman screaming, drunk husband waving a gun?
We are pretty sure that a chase (car or physical) will ensue if a citizen reports something. Whether in the end whether it constituted a shooting by the officer is the unknown until after it has occurred. If the cop is white and the suspect is non-white it makes national news ad nauseum and the rhetoric is almost always structured by the anchorman in such a way as to suggest, without saying, that the cop was motivated to shoot because of the suspect's race. BS.
Ubiquitous cell phone cameras come out and we see the replay from various angles. With the exception of the close up shots of George Floyd being restrained and heard his cries we usually don't see as much on the TV news. And as far as I know that situation's final findings have still not been made public.
To clarify, I feel sick when I see one of those stories on TV. Usually my first thought is "why did the cop have to shoot?" This is going to add fuel to the raging fire. Was it that serious? Could there have been a de-escalation strategy? But them, I don't know. I can't know, even if "the suspect didn't have a weapon, only holding his cell phone", etc. I know it will ruin somebody's life, the injured/dead, their "loved ones", the city, and especially the cop's and his family's. It has to be fact that no policeman wakes up every day and thinks "I'm going to go out and commit a career ending act against another human, particularly one of another race."
But that's why we "wake up" to those incidents. JMHO.