Private property presupposes the moral right to that thing.  It can only arise if the initiation of force is prohibited from society, which means there must be some mechanism to protect against the initiation of force.  To be effective that mechanism must have a monopoly on the retaliatory use of force.  What is that mechanism but government properly constituted and limited?  Without this mechanism we are at the mercy of the mob with the most power.  (See the American regulatory state or Gaza)  Government is vital for civil society, but to fulfill the needed mechanism it must be properly limited to the courts, police and military, all run according to the rule of law.