As a former police officer I find you lack of perspective appalling. It is every citizen's responsibility to insure that your rights are respected by the police. That is accomplished by legitimate criticism of their actions.
My heart goes out to the families of my brother officers; but I am outraged at the mindset of the departments that lead to these horrific tragedies. Officers are not being taught to respect the Constitutional Rights of the individuals they encounter - leading to incidents like this.
My recollection of this incident is that these officers knew this individual to be of limited capacity, having dealt with him before. Once at the noise complaint, if they felt there was some sort of threat, the proper response is to secure the location to prevent violence and call for more units. Kicking in a door is a last resort and can only be done without a warrant in very limited, specific circumstances - which most likely didn't exist here.
The viewpoints you see being expressed are legitimate, if a bit crude. Police tactics have eroded to the point that even officers themselves are beginning to question what is occurring.
In the instant case, we now have two dead cops and an individual of limited intelligence charged with two murders. And it all could have been avoided had they been taught proper procedure - which comes from a healthy respect of the Constitutional Rights of individuals - even yours.