That can only be determined on grounds of faith. No one, neither you nor I nor anyone else on this good Earth can make such a statement.
Even those very wise words from the Declaration, from the beginning of the Declaration through today have been controlled by man (or monarch or whatever). Those who wrote those beautiful words in the Declaration also didn't extend those same words to all people of all nations. As a matter of fact, they didn't even extend them to all people who would be affected by that declaration.
The point in both the DoI and the Constitution is that rights are granted neither by man nor by government, but by our Creator (to most of us, God). The DoI and the Constitution simply guarantees, enumerates, and lists those rights, and prohibits men and governments from denying those rights on the grounds that men and government have no authority to deny said rights.
At the same time though, man has throughout history twisted and perverted, or even at times outright ignored this principle for capricious or purely evil means. While I won't doubt that, it still does not change the fact that the DoI and Constitution make note of the lack of authority of other men to deny specific rights.
This was one of, if not the key question with regard to slavery--how can a nation founded on high ideals and the principle that man cannot deny another man's freedom be ignored? Is that not hypocrisy? (note: rhetorical questions)
God has not intervened in the third world. Even those of faith live under represive governments and represive conditions. Those freedoms that can only be endowed by the Creator don't seem to exist. The words on those documents, and yes they are wonderful and marvelous words, are simply that. The Creator doesn't crack the knuckles of the government of the day when they interfere with those freedoms. They are not zapped when they play around with those documents. So yes, it is man and the rulers who are in control.