Debate: of the two documents named below, which is more important than the other, and why?

B. It protects us against tyranny.

Both most likely have value and validity... it would be hard to say which were the more important, it could only be down to opinion yes? 

I would disagree with carbonproduct.

I would argue that the Declaration of Independence protects us more against tyranny than the Constitution.
Reason: the DoI lays out justifications for taking up arms against your government.

The Constitution may be altered ... or "interpreted" ... or ignored ... at the whims of politicians and citizens.
And has been at various points in history.

But the Declaration of Independence has inspired people around the world to list their grievances against governments ... and, if necessary, to take up arms in rebellion against injustice.

theyre both equally innportant

Not sure that B would have been anything but laughable without A.