Some seem to place the founding U.S. documents at the center, if we understand this correctly. They appear to place the 'left' in a kind of opposition to these docs. Who and what is an example of being to the 'right'?
This is what we are supposed to be doing:
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.
what opposition are you referring to from the left?
The "they" referred to those who appear to place the documents at the center and their opinion of 'left', not anything I've said or believe. Certainly, major aspects of those documents and the words that construct them can be seen in various ways. Even more so can the original intentions of long dead "founders". There is no reasonable way to claim a monopoly on understanding. So, if two sides are merely arguing over these same, 'central' documents, they are not 'left' and 'right' of one another. For one side to claim the other is 'right' or 'left' simply due to seeing things differently, it changes how we have to interpret those terms.