From the Bill of Rights:
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.
From Supreme Court Justice Antonin Scalia (June 6, 2008):
The Constitution does not permit “the absolute prohibition of handguns held and used for self-defense in the home….”
From Lennon/McCartney:
You say you’ll change the constitution
Well you know we all wanna change your head
….
Don’t you know it’s gonna be Alright….
From Charlton Heston: