Answer: Assuming international recognition and relative peace, the most important function of government are ensure public order and provide means for conflict solving. The other functions can be covered by people or the private sector (how effectively is a question that remains unanswered) but only the State should have an army or a police force and only the state can provide for a legal system and a political system in the national level.
Most because getting out of jail/prison don't really know what to do with themselves after leaving because it's hard for them to adjust your life choices. most places of work won't hire you and it becomes harder to do stuff like buy a house or apartment. so most people do what they did best before prison. Do illegal business
Civil liberties are protections against government actions. Civil rights, in contrast, refer to positive actions of government should take to create equal conditions for all Americans.