The Founders Fathers were indeed a bunch of highly intelligent, elite, racist white men, the cream of their crop (in America) and highly regarded back in Britain, as well. Considering the circumstances at the time, I believe they had one helluva idea -- to try and perfect British rule of law to establish a better, more relaxed type of governing. They first asked Britain if they could, when Britain said no, they only way they could make it happen was to go to war and fight for it (typical European way). Thus the American Revolution and War of Independence.
Having won their war and independence, the Constitution and the Bill of Rights was born. They are documents of a great American Dream, the foundation to the establishment of a whole new country. The only one constant of this ever-changing society was designed to be -- and actually has been -- the Constitution and the Bill of Rights. Any and all changes to our national law are based on it.
I think you have to look at our Constitution and the Founding Fathers as a fallible document produced by fallible people. Indeed, it was either ignorance or arrogance that led them to look at human beings as animals. How much more failing can a person be? But, I also believe it's true that there are a lot of African Americans who believe the "Dream," the promise of America, due to the fact that our ancestors made America what it is today ... whether or not credit is given for doing so. It's a fact of life. Without Black blood, sweat, tears and life, there would not be an America as they (and we know it). And the promise of America is the Constitution.
The Bill of Rights are actually Amendments (the first 10) to the Constitution. It wasn't right the first time. It needed adjustment. And the Congress did just that. And (thank God) the Constitution is not exactly finalized, because other Amendments can still be added, although it takes a vote by 2/3 of the 50 states to pass one (another safety net courtesy of the original Constitituon!)
Those rights that you listed above today are all subjects that are (supposed to be) legislated by our Congress, but without mention of becoming any sort of addendums to the Constitution itself. We've yet to have a Congress to adequately legislate any of those things. But the Congress is composed of those who are supposed to represent us. The fact that we continue to let them without holding them responsible for either legislating or amending the Constitution to acknowledge these societal necessities is on us, at least to some degree.
I personally believe the Constitution was a very strong, powerful, enduring founding document. And I highly commend the brainpower that went into drafting and instituting it. They almost covered all bases. And then fortified it pretty good with the Bill of Rights. And although I strongly believe that your 7 "rights" listed above definitely need to be added as amendments to it, I don't believe any of our two dominant political parties are capable of making that happen. They can't even agree on the premise of those things. let alone see them as a necessity. I believe Republicans would rather die a slow death.