Until we have robot police officers, there will always be a human in the loop. But right now, there's a whole category of "drunk and disorderly" / "breach of the peace" kinds of laws that are ~100% up to the discretion of a police officer to enforce. I won't say you CAN'T have it any other way, because I can imagine alternatives like "don't have those laws", but I will say that you don't WANT to have it any other way.
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