Disarming: Social studies have shown that it's difficult to walk back changes to the social contract. We already have a society to reliant and accepting of guns to send police unarmed. Right now in the Cal Bay area you are very likely to be shot just for stopping someone who is stealing a catalytic converter. It makes no sense to have a deterent factor that can't actually deter behavior. De-arming would need to be combined or following stricter gun laws and significant cultural shifts. That said, reviewing and revising the arming strategies is something that should occur. That is of course, unless you aren't trying to prevent a potentially substantial rise is polics officer deaths.
Defunding: Removing funding without removing work load really just doesn't work logistically. This has led to breakdowns in everything from the airline to the railroad industry. I'm sure there is a way to better allocate funding, but simply removing it is a problem. Alternatively, may US children had (or have) terrible times in the US school system. Should we defund it as a corrective measure? How does that help?
But I am curious, how do you believe these approaches would help the situation? How do you suggest they get implemented?