2nd Amendment - 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.
Here are some quotes about the right to bear arms and why it was included in the Constitution
“-The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government. “ Thomas Jefferson
“-The Constitution shall never be construed to prevent the people of the United States who are peaceable citizens from keeping their own arms” Samuel Adams
“-Arms in the hands of citizens may be used at individual discretion... in private self-defense.” John Adams
“-Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth.” George Washington
“-The very atmosphere of firearms anywhere and everywhere restrains evil interference - they deserve a place of honor with all that's good. “ George Washington
“-A well regulated militia, composed of the body of the people, trained in arms, is the best most natural defense of a free country.” James Madison
Here is a little "poem" about the 2nd ammendment
First came the ban on automatic assault weapons,
I did not speak up,
Because I didn't need such a weapon.
Then came the ban on “assault” weapons and “assault” ammunition,
Again I remained silent,
For I had no quarrels with anyone.
Next came the ban on pistols and newly made rifles,
I kept my mouth shut,
This made no difference as I already owned these.
Finally martial law was declared because of an “Act of terror”;
A new constitution was forged, severely limiting rights of individuals;
Gone was the right of freedom of speech, free press, the right to own property, and the right to bear arms;
Gone was Habeas Corpus and the right to a speedy, just, fair trial;
Gone were our Republics, Commonwealths, States and our Democracy,
It was already too late to speak up because we had no worthy guns with which to fight
Only when the government took actions against The People, did I truly understand the reasoning for the Second Amendment:
Encroachment upon one is an encroachment upon all.