As usual, libs don't let "feelings" get in the way of facts. which they like to make up as they go...
Actually it looks like the error (about “all men are created equal” being a phrase from the Constitution) was introduced by the reporter who wrote the article. The very next paragraph quotes Taney referring (correctly) to “this declaration.”
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. --That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.
This IS THE founding paragraph of the country. It should also be the metaphysical and moral compass that guides us. The most forgotten word of this document is in the title: unanimous. This is why A. Lincoln said four "Four score and seven years ago . . ", not three score and sixteen.
Dred Scot was a disaster precisely because the court sided with the compromises that the Constitution made with slavery instead of the moral foundation of the Constitution that is found in the Declaration.