it's an interesting quandry when the gov't simultaneously refuses to provide services in an area and refuses to allow the people to perform the service for themselves.
First off, Stockton is not "refusing" to provide police services - they had to make budget cuts, like most municipalities in this trying economy.
As for what people can do, people can facilitate the remaining law enforcement by being vigilant and reporting crimes to the police. Of course that would require more than a dozen or so extreme "militia" forming nutjobs to actually give a flying crap what happens in their community...
I understand these folks are frustrated, but this really isn't the way.
I also can't get over the audacity of attempting to bill the city for their "services"...