The kind of crime that fences, walls, gated communities, electric fencing, and metal bars serve to protect against are the kinds of crimes that are deprioritise

The kind of crime that fences, walls, gated communities, electric fencing, and metal bars serve to protect against are the kinds of crimes that are deprioritised by corrupt governments who would rather have their law enforcement look into monitoring and suppressing political dissent because that's more of a direct threat to their power. If a society is willing to give up their privacy then governments can be lazier because they'll be more aware of their direct threats, therefore they need less awareness of actual societal problems, which are indirect threats.