Agreed on forfeiture and mental health calls.
I think Life in Suburbia without law enforcement would be tied to how things go in the nearby city. And we tend to know only our nearest neighbors, so suddenly banding together to protect the area seems unlikely. If the city goes haywire, seems likely it would carry into the suburbs. Even if our local Leo’s were still funded, how long before they are overwhelmed.
I don’t think police are the linchpin of society and without them we’ll fall into chaos. However I could see some opportunistic people creating a mess until society gathers their wits and responds cohesively.