This is a piece worth reading. I have been thinking the same thing.
"The ubiquity of cellphone, dashcam and surveillance video has transformed the way the public understands police violence. But as scene after scene unfolds on shaky screens and in grainy contours, another element of the violence is beginning to come into focus: the pattern of officers showing no concern for the person they have shot, often fatally.
The nonchalance around the injured and the dying is stunning in its own way."
It does raise the question, why is this the case. The answer is utterly simple.
Dead men tell no tales.