Telling a cop it's non of his business where you are going is certain to get you 'in deeper' just about anywhere, not just New York. That's where the problem is. We are all 'guilty' of something if they want to push the rules and laws to the max. Who among us uses a turn signal at every lane change, or hasn't wandered too close to the middle or edge of the road? A cop can find something to write you up for if he wants, and it's your problem and time to fight it in court. This is especially true when it's not close to where you live. Who is going to drive 300 miles to fight a 65 mph ticket in a 55 zone? If you give him any 'lip' you get to wait for the drug sniffing dog and guess what, the dog finds a 'hit' and your car gets trashed or hauled to some impound yard owned by the sheriff's brother in law. The most serious crime can be 'contempt of cop'.
This is not from personal experience, so I'm not trying to justify any personal situation. My last traffic ticket was 10 years ago, for doing 75 in a 65 zone at 3 AM while traveling through AZ. I was so clean I squeaked, but you could see the cop anticipating he had caught a live one.
I agree with knowing public drunkenness when you see it. Nobody likes to see it, even at a bar. If the bartender had called the TAB or the cops, nobody would care, and it would be no concern for us. We shouldn't have to live in fear of cops arresting us for going about our daily lives while doing things in a legal manner. This is a bigger danger than any terrorist , IMHO.
Maybe some law enforcement officers who read this board would care to comment on how they see the situation, and maybe relate an experience or two.