Nobody's taking away their ability to do their job. What we're trying to do is make sure that the police don't abuse their power, that their use of power is accountable, and that they can be held liable for it when they do abuse it.

Police have to get warrants for searches as well, and nobody seems to be saying that that stops them from being able to do their job.

You're saying two separate things.

We should make sure police don't abuse their power. That's what auditing and strict access controls are for. If someone abuses it, they are held accountable.

But that doesn't mean you need a warrant for everything. It's much like police have guns and can use them at their discretion, but every time an officer draws a weapon of fires is brought under scrutiny. It works exactly the same way. Imagine if police had to go to a judge before they were able to draw their weapons!