False dichotomy.
You can defund the police, by not sending armed, militarized police to do the bullshit parts of their jobs, while still responding to violent incidents.
For 99% of police calls, you don't need an armed gunman to show up. Of the 1% that you currently do, more often than not, that armed officer won't even show up in time.
Maybe US cops need to just leave their guns in their cars more often?
Example: https://c8.alamy.com/comp/HXD0AX/windsor-uk-27th-march-2017-...