"A well regulated militia being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed."(bill of rights)
The second amendment protects the people and enforces the government to not become corrupt
The second amendment was meant to give citizens power to defend themselves from others and their government
The second amendment allows people to carry guns,which creates a armed population of citizens who are able to stop/prevent crimes that occur around the citizens that carry guns
A person is presumed justified in using deadly force to protect themselves against an unlawful, forceful intrusion into their dwelling, or to prevent an unlawful, forceful attempt to remove a lawful occupant from the dwelling, or to prevent certain serious felonies such as burglary or arson. There is no duty to retreat from any place where the shooter has a legal right to be.
United States v. Miller, 307 U.S. 174 (1939) - The Court stated in part:
"In the absence of any evidence tending to show that possession or use of a "shotgun having a barrel of less than eighteen inches in length" at this time has some reasonable relationship to the preservation or efficiency of a well regulated militia, we cannot say that the Second Amendment guarantees the right to keep and bear such an instrument. Certainly it is not within judicial notice that this weapon is any part of the ordinary military equipment, or that its use could contribute to the common defense. Aymette v. State, 2 Humphreys (Tenn.) 154, 158. The signification attributed to the term Militia appears from the debates in the Convention, the history and legislation of Colonies and States, and the writings of approved commentators. These show plainly enough that the Militia comprised all males physically capable of acting in concert for the common defense. 'A body of citizens enrolled for military discipline.' And further, that ordinarily when called for service these men were expected to appear bearing arms supplied by themselves and of the kind in common use at the time."'