People (especially those on the right side of things) tend to forget the preamble to the constitution:
We the people (all of us, not just the rich and powerful)
In order to form a more perfect union (more perfect, meaning there are flaws and problems to overcome with the way things are)
Establish Justice (set laws to protect all)
Ensure domestic tranquility (Ain't gonna happen if the haves have and the have nots have not)
Provide for the common defense (i.e. the military which kind of throws the 2nd amendment in stark relief as far as that nasty little sentence which actually says for a "state militia")
Promote the general welfare (do for others who can't)
Ensure the Blessings of Liberty to ourselves and our Posterity (meaning all those who follow - not just "our" kids)
Do ordain and establish this constitution (possibly rendering this document more important than the constitution itself)
For the United States of America