Police and citizens can lie about what happened and nobody will know the difference. 

Why not?  Are they hiding something?

If you are honest and pure in your intentions and you are doing the right thing, there is no reason why someone can't watch you.  I'm not asking to watch you go to the bathroom.  I want to make sure you are doing your job.  This is no different than surveillance cameras in a store.  They are for the clerks safety as well as the stores well being.  It is time officers start to be honest with each other and critique each other the the proper standard.  That will be the only way this gets better is if they step up and lead by example.   

If they do wear the body camera it should be small and not impede the operations of the Officer. The CCSO has them and they are big and bulky.

This makes both parties accountable and is a digital record if any questions arise regarding an incident.

We have the technology so why wouldn't we do it?  It will help avoid issues we have seen across the country.  It would also most likely be federally funded.

Cops lie.