With all due respect, do you realize that the Declaration of Independence is NOT a governing document?
No. It's more important than the Constitution.
It's the ESTABLISHING document by which the governing document derives its existence.
Without the Establishing document - there is no governing document that would have been created for the sole purpose of limiting governance to very specific and menial things necessary for a civil society to exist with its liberty intact.
Our rights, nor the existence of liberty comes from any document from men. It is established along with fundamental rights that a people possess to abolish the forms to which they are grown accustomed which evinces the design to render them under absolute despotism. A reality we now live in that we lie to ourselves about because mankind are more disposed to suffer evil while evils are sufferable than right themselves.
So all kinds of excuses are made to justify existing under despotism, because such evil is sufferable, and any thoughts or efforts to abolish it are rendered distasteful by those unwilling to risk the thought of liberty.