Protection is a broad term used to define freedom from every perceivable threat. It is a condition for a elected government; duty of law-enforcement agencies and responsibility of every individual. The government makes rules for safety of life, liberty and property of citizens; the police keep a tab over criminal activities by unsocial people and the individuals take precautionary measures to keep residential and commercial establishments safe from intrusions.
The government is elected to make laws and implement those rules using the available manpower and resources. Law-enforcement agencies get the power to act in favor of civil society from the elected government. The police keep an eye over strangers, movement of people with criminal background and other activities that could be harmful for the civil society.
Individuals are free to take precautionary measures like fencing, walls and vehicle barriers to prevent unwanted persons from trespassing upon their properties. Also, the individuals are allowed to install security equipment for added security to their properties. The government and law-enforcement agencies expect individuals to take these measures and there are reasons for individuals to take advanced security measures for protection of their properties.