Independence Day was a defining moment for our country, when we chose to finally break with the Mother Country and go off on our own as a country. I was going through my genealogy on
www.familysearch.org and I was quite surprised at the number of ancestors who actually took up arms to fight in colonial militias to drive out the British Army. That tells me that the situation had become intolerable for more people than the highfalutin elites who led the whole thing.
Independence Day was when the Declaration of Independence was published ( it took awhile for all the signatories to actually sign) and more importantly, the reasons
why the split with the rest of the British Empire occurred:
https://www.constitutionfacts.com/us-declaration-of-independence/read-the-declaration/. it was a time when we common colonial peasants finally decided that we
did, in fact, count and that we had a responsibility to protect our own freedoms, if Parliament and the King weren't going to do that for us. In all honesty, all we really did was stand up for and protect our own rights as natural born English subjects. It would have been nice if George III answered some of the letters that were sent to him.