...says somebody without children?
Turning it around, how would you like if the police tortured your child in a case of mistaken identity? Looking at the members of my high school class who became cops, they weren't exactly known for being the brightest bulbs in the box, but always acted with confidence despite that.
No, it's not, and the divergence between reality and this description is increasing, essentially monotonically, over time, with legal incorporation of “victim’s rights” into the criminal justice process.
That's not to say it shouldn't be as you describe, just that it isn't.
https://www.justice.gov/usao/resources/crime-victims-rights-...
They don't extend to the decision making process for others' investigations and prosecutions.