Drone flying and police officers are a touchy situation. Many of the officers you might encounter while flying know less than you might about drone flying law, which makes for a generally uncomfortable situation for all involved. The video here shows how a group of animal activists legally flew their drone near a Harris feeding ranch, which caused quite a bit of hubbub. Though I’m not necessarily a fan of the tone and obvious angle from the SHARK guy, it does highlight how situations like this can go.
If nothing else, it’s worth a watch to see how you should handle a situation. Though they were clearly upset, the drone pilots were cordial and did end up getting their way. Basically, know the rules, stick by the rules, and you should be good.