So you are an experienced liar. I imagine you were trained to lie to suspects and even regular citizens. 
Cops have lied to me on numerous occasions. 

I am  not sure what kind of weird point you are trying to make. 
Do you want people to like the police so they lie less? 
Maybe the police should stop beating people and lying about it. 
Maybe police should not show up at lawful protests with military gear they are not trained to use.
Maybe the police should have the attitude that their purpose is to protect and serve. 

I have never respected the DPD as a whole. I have seen too many unnecessary beatings by them.
When I was young and frequented lodo, I would cross the street if I saw Denver PD. After seeing a fireman beaten for asking why his friend was being beaten, I realized that they all can not be trusted.