Second Ammendment

Second amendment gives the right to  people to own and carry Arms. This right may not be violated by the State because a well equipped militia is necessary for keeping state safe and secure. It was passed by congress on September 25th and added to constitution on December 15th in 1791. It is one of the ten amendments to the Constitution contained in the the bill of rights.

The actual text reads: "A well regulated Militia, being necessary to the security of the free State,  the right of the people to keep and bear Arms, shall not  be infringed."

The debate is mostly around whether the right is individual or collective right. Supreme court invalidated a federal law that bans Arms in Washington D.C.

References
History of the second ammendment
Second amendment interpretations
Constitution Center on 2nd Ammendment