Comment by saila
I agree we need to separate these responsibilities, but when it comes to mental health response, the police themselves are often opposed to alternatives, even while they complain that they're not mental health providers and often can't do anything in those types of situations.
In my city, we've had an underfunded street response program for a few years now, but a lot of people (including a lot of people who don't live here) see it as antagonistic to police and police funding, when really it should just be part of a holistic system to address social issues.
It makes no sense to me that the people who ostensibly care the most about addressing crime and "disorder" on the streets are often the most oppositional to programs that might actually address some of the underlying issues (not all of course, but some).