The false but popular notion that all the original writers of the Constitution had conservative and inegalitarian views depends crucially on ignoring Reconstruction, and being able to trust that most Americans' high school history classes ignored Reconstruction.

Relatedly: As a child, I thought that the pre-1936 Lochner-era view that the Constitution severely restricted the size of government was based on real Constitutional text and went back to the founding. I was shocked later to learn that this is completely false!

This line of legal thinking was developed by SCOTUS in the post-Civil War years, based on ahistorical claims that the "due process" clause of the 14th Amendment limits the right of contract and government economic regulation. It is not the original meaning of the 14th Amend.

The Reconstruction amendments were passed to undo Dred Scott, to ensure that in our new constitutional system all American were required to be treated equally, and have their full political rights, at both the state and national level. They were not about libertarian economics.

Going back to the founding generation does not save the libertarian project. They had famously divided views on the size of government. But figures as obscure as Alexander Hamilton (51 federalist papers!) and John Marshall thought the government should be large and powerful.