It's dangerous to bandy around statements like "most cops are good cops" for which you don't have evidence. Instead, you might say "Some cops are good cops".
Care to back up that assertion?
"Unnecessary" and "dangerous" are quite different.
See, he's not holding himself to your standard of evidence. That would require mass mindreading, plus the ability to irrevocably demonstrate the authenticity of such.
Rather, he's backing up that statement with evidence in the reader's head, counting on most readers to reflect back on their life experience and see if his statement fits. He has faith that it will. In my case, it does: I agree. I'll even upvote him.
Edit in reply to rosser: I agree with you there.
Even if they're the nicest person you've ever met.
If we are going to get real reform, we need the police to also buy in. Alienating them doesn't help.
The drive to consider oneself a "good person" is fundamental to human nature (yes, psychopathy is a pathology). The issue is that "good" is socially defined. LEOs operate in a very odd social space.
How do we get LEOs to want to align more with a more civil social space? This is the nut we need to crack.