The Declaration of Independence can never possibly mean what you claim,
It can only ever mean what our Founders said, and none of them ever said it justified an unlimited "right of secession" at pleasure.
You "liberal" Democrats are constantly trying to redefine our Founding Documents as if they were "living" to be interpreted according to your latest whims.
You need to stop that. ;-)
They said exactly that. Again, diagram the sentences.
You may not like it, but that is exactly what the Declaration of Independence says. It isn't even murky about it, it comes right out and says that people can abolish their government for any reason they see fit.