Basically, remember that since all cops are bastards, if you feed their egos enough (and are white) they will be more likely to let you off the hook for minor crimes in a toxic cronist sort of way.
2a. If it is impossible or impractical for you to be white, instead use your "Sorry For Bothering You" "white voice".
3. Roll d100 and consult Table 22: Cop Bastardliness Levels, to determine difficulty classes for your Persuade and Bluff checks.
Good luck!
It's always best to just avoid all police encounters in the US. If you routinely drive in excess of posted limits, use radar detectors and crowdsourced speed trap warning apps. Tint your windows to the legal limit, and no darker. Ensure your signal lamps are all functional, and signal all turns and lane changes. Come to a full stop behind the line at all stop signs and red traffic lights. If you see a uniformed cop in public, do not approach. Be somewhere else, as quickly as you can manage, but without appearing too suspicious.
In any situation in which you might think it would be okay to deal with police directly, you're probably wrong, unless someone is literally in mortal peril already. Instead contact your lawyer, or security contractor, or insurance adjuster, or psychiatrist. In most cases, the police have no legal obligation to help you, and legally unchecked power to harm you, so why risk it?