yes, we need a court and penal system, pretty obvious. police? maybe, but only for preventing crime, to actually be on the streets stopping crime in the first place.

would be pretty unnecessary if everyone is taking responsibility for themselves so everyone will defend themselves or their property, again, like how life has been for most of our existence.

so yes, proper due process, court proceedings, judge and officers of the court. still no need for a central government though is there?