If the issue is police and sheriff's departments having roots in the crime world of LA, then perhaps the appropriate mitigation strategy is for those departments to be wholesale swapped out with ones that were previously operating in, say, Idaho. The idea is that what these regions need are law enforcement, and any PD or sheriff's department educated on local laws should do. All of the reasonable arguments against this that I can anticipate are ones that involve so-called problems that either have trivial solutions, or are actually just a collection of tremendous upsides only dressed up to seem bad.
Change my view.