Well if there's one dude I wouldn't piss off under any circumstance, it's the Guy With The Gun.
I've dealt with asshole police on more than a couple occasions. Sometimes no matter how nice you are, they try to start something. One time I got pulled over because my brake light wasn't working. I had just left Murrays (auto shop) where I purchase a new one, and the cop was giving me a hard ass time despite me showing him the light AND the receipt proving I had just bought it. I tried telling him my screw driver was at home, I lived like 10m away from the auto place, and I planned on installing it once I got there but he made me sit in the car while he ran my license for 15 minutes. Then kept trying to talk down to me and shit. Meh, I just took it, said "thank you officer" and drove home.