I've heard these arguments before, and in general, as with so many things, they leave me feeling conflicted and confused. Maybe the real story is a mixed bag of idealistic, enlightenment intention and self serving power grab. Certainly when you read some of the preserved personal communications of some the founders, you see a sincere desire for the realization of principles of liberty and social justice. They were not cynically self serving at that point, for the most part.
Switching gears, it's a riot to see the TeaTards expound on enumerated purview of government, claiming the purpose of the Constitution was expressly for limiting the powers of the central government. If that was what they wanted, they would have stuck with the Articles of Confederation, yeah?
Switching gears again to a possibly inappropriate gratuitous pop music vid, enjoy some Foo Fighters. They wanted something beautiful, they wanted something true? I remain optimistic, if jaded and skeptical.