Cops will always complain about constraints on their policing and investigations, but those constraints are there in order to protect people's rights in the eye

Cops will always complain about constraints on their policing and investigations, but those constraints are there in order to protect people's rights in the eyes of the law. I can't say for certain every single rule or law constraining cops are good or helpful to that goal, but based on my experiences with humans in the past, I don't trust very powerful authority figures that say they just need a little bit more power to do their jobs effectively. I think that quickly turns into corruption.