I don't think anyone here feels that way.Thanks for painting "us" as adversaries. I think you (and anyone else who feels this way) are failing to recognize the different rolls and responsibilities within the legal system.
The police role is to enforce the law, investigate crimes and gather evidence. Our loyalty is to the Law and public safety and that cannot be influenced by the individual interests of those we interact with during investigations. If you want/need a "friend/advocate" in situations such as that listed here then ABSOLUTELY invoke your right to remain silent and obtain a competent lawyer to help guide you through interactions with the police and navigate you through our ridiculous legal system.
But even if you are involved in a shooting most likely they are going to tell to not say anything until you have representation.
It's just the way it is I think.
By the way I have respect for anyone wearing the badge.