With all due respect, Loader, it is NOT the same law that allows police to open carry. There are separate state laws that define and mandate police officers to TRAIN and QUALIFY with their agency issued or privately-owned firearm and to carry it open or concealed, both off duty and on duty. Federal law (HR218, for example), gives certain trained police officers the ability to carry concealed nationwide during employment and after retirement (me being one of them).
These so-called "constitutional audits" are the exact opposite ... they simply prove how uneducated and untrained many firearms activists and/or anti-police people with a camera prove how stupid they really are. Remember the hierarchy: Constitution, federal, state then local laws/ordinances ... the lesser can never super-cede the higher standing.
Sure, some cops are idiots, but it's in VERY VERY few numbers. Cops generally possess more education and firearms training (as do military personnel related to training) than the overwhelming majority of these alleged Pro-2A folks out there. If someone claims to be Pro-2A and concealed carry, they should have the training and experience to back it up.
Not an attack YOU personally, just facts.