What was ‘Revisionist’ about Sam’s tweet?

I’m trying to figure out what part of this tweet isn’t historically incorrect?

While I don’t think it is in bad taste, especially since everything he stated is TRUE (he left out indian killers), probably not the best statement about the 4th of July from the State Director of the Democratic Party. But it certainly isn’t offensive or ‘revisionist’. What is ‘offensive’ is the response from the SDGOP manure spreader;

SDGOP Chairman Lederman said, “Our founding fathers fought and died on the battlefield and forged what grew to be the greatest nation on earth based on the principle that we should be a free people, and that their fellow citizens should not be subject to taxation without representation.”

White, Male, Property owners to be ‘FREE’ people. Women, slaves, Native Americans, and indentured servants . . . not so much.

“The South Dakota Republican Party and the people of South Dakota reject that kind of liberal revisionism that Democrats continually try to inject into our state.”

As I stated above, I am still trying to figure out what part of Sam’s statement is untrue? Of course, it is easy for the SDGOP chair to cry foul while representing mainly conservative Christians while being registered to vote in Iowa (and doing business there) while lobbying for Muslims (he is Jewish). The heck with rewriting history, let’s just rewrite the rules.

“They’re hiding what they stand for at the same time their director is bashing Independence Day.”

Just because the party hasn’t released their platform to YOU, doesn’t mean they are hiding something. And stating the truth about our founding fathers is NOT bashing Independence Day, or Veterans, or whatever kind of group you want to pull out of your ass that you may think will be offended.