PDs have attorneys on call and prior to that they can call their sergeant if they are unsure. Even real lawyers don't know every aspect of every law on the books.

What baffles me is the hypocrisy in the political party that wants more government and regulation is the same one that hates the men who enforce it.

It's not that people hate police, it's that the police have zero accountability and that, over time, has lead to a culture where they can do whatever they want, whenever they want. The police are rife with systemic abuse and even a HINT of "oh maybe we should be looking into this" is met with "back the blue" type people crawling of the woodwork to explain how qualified immunity is good, actually, and we don't want good ole boys going to prison for things as trivial as state-sanctioned murder.

I think a good police force could exist, but the current implementation could use improvement