I'll simplify that for you. "Anyone is a dangerous individual". Easier?
I have a liberal nephew (where did we go wrong?

) We had a disagreement over an officer who shot a man approaching him with a knife.
His argument was that 9 times out of 10, a man with a knife can be safely disarmed by someone well trained. (possibly right, his assertion, not mine).
His sister married a police officer, and hubby's question to him was "So, if I face that situation 50 times in my years on the force, how is that going to work out for me?"
You have some "great solutions" for police work. Do you have a good answer for hubby-cop's question?
I pop the circuit breakers downstairs, and then treat the outlet as if it's live. I take my grandkids to a park, and watch every nearby adult as if they're a potential predator. I haven't had a flat tire in years, and air up my spare regularly.
And, during 364 days in the jungle, nobody shot me. That "other" day was a B*tch.
So, if you can identify which day, which person, which relaxed approach is going to be "the one" that puts you in the hospital, you'd make a great cop.
Otherwise, after a few years and sharing the experiences of the "old-timers", you'd be a lot like the rest of the guys on the force, I'd wager.