I think laws (the kind we're talking about, anyway) are best seen as a tool for maintaining public order. If police encounter something dangerous or immediately disorderly, they can express their reasons for intervening in terms of laws. If you run open headers on your car and cause an actual disturbance, you can be cited. When that relationship between order and law is inverted, the result is cops nickle-and-diming the populace when there was no actual underlying problem.
The real application of law requires, you know ... nuance, discretion and situational awareness. That's the standard we should hold police to, not throwing every single page of the book at people all the time.