The founding fathers do not represent an America that exists to serve landowning white men, at least not to the majority of the country. To many people, they symbolize something else entirely that is bigger and better than the men that they actually were, something noble, independent, freedom-loving, bold, courageous, and all that. Again, regardless of how true it is, they serve as an idea at this point.
But for you they serve as the opposite sort of symbol, one of oppression, greed, selfishness. The founding fathers were both of these, and what they represent to different people depends on perspective and world view.
Lemmy moment