It's high time to make the cops wear video cameras that are permanently turned on while on duty, and to make it a penalisable infraction for them to obstruct the camera without filling in reams of paperwork to justify it afterwards.
"hire better cops" usually translates to "pay cops more".
SF and Oakland are already amongst the highest paying police departments and neither has almost any residents of their city working for them. I have met some of the police who are natives in both cities and it's a great way to get uninvited from Thanksgiving, and with good reason.
FTFY.
Or... Even better...
It's high time to hire better cops.