Of course only an American would think that they are unique in overthrowing tyranny.
He never said we were unique. He only said that in comparison to Europe and Asia, our country was not founded by a conquering king. You hold up Great Britain as an example of a country that's thrown off tyranny, but I suspect you never quite passed your A-levels in history. Queen Elizabeth II is a direct descendant of William I, after all, a guy better known to history as William the Conqueror. So, no, I'm not going to accept Great Britain as an example of a country that avoided being founded by a conquering king, given a conquering king is in the direct ancestry of your current monarch.
We also find some sections of the American populace self centered, selfish.
I'd be quite surprised if you didn't. In a nation of over 300 million people there are going to be large portions of it that you don't like. There are large portions I don't particularly like, either.
I honestly think your founding fathers is they could see what you have become as a nation would disown you.
Of course they would. "Wait, you gave the vote to women, people without property, and the darkies?!"
In the Jefferson Memorial in Washington, D.C., one of Jefferson's finest writings is engraved on the wall in huge letters for the world to see.
"I am not an advocate for frequent changes in laws and constitutions, but laws and institutions must go hand in hand with the progress of the human mind. As that becomes more developed, more enlightened, as new discoveries are made, new truths discovered and manners and opinions change, with the change of circumstances, institutions must advance also to keep pace with the times. We might as well require a man to wear still the coat which fitted him when a boy as civilized society to remain ever under the regimen of their barbarous ancestors."
So, yes, we would definitely be disowned by the Founding Fathers. But that's okay. Thomas Jefferson himself gave us permission to improve upon the model they left us. The Framers were horribly flawed human beings. Their great triumph was not that they gave us a Constitution, but they gave us a process: not a law fixed and unchanging for all time, but a means by which we could gradually make our country a shining beacon upon the hill. Rather beautiful, really.
Ah, I see. You were actually meaning to imply they'd be ashamed of how we conduct ourselves because we don't happen to agree with you? Well. Speaking as a Virginian, which is to say a member of one of the original Colonies that rebelled against George III, let me give you the traditional Virginian response to foreigners who want to tell us how we should rule ourselves: go away.
Maybe our system is correct, maybe it's not. Either way, we're not going to pay your opinion about how we should live the slightest tinker's dam of attention. Instead we'll talk with each other, our communities, our neighbors, and we'll fumble our way forward into the future together.
This idea that an unarmed populace couldn't fight a tyrannical government is pretty weak to be honest.
I'm sorry, I couldn't hear you over the death-knells of the millions of oppressed North Koreans, over the conflagration of the Jews and the Romany and the homosexuals and the dissenters in German-occupied Poland, over the cries of hunger of the one million Ukrainians who died in the Holodomor, the terrorized shrieks of the Armenians who were pursued by the Turks. We can go back even to the Mongol era, where the great Khan put large parts of Asia and Europe to the sword and unleashed a campaign of rape and terror the world had never seen before.
If you really think that an unarmed populace can quickly organize to resist an armed oppressor, then you are living in a state of utter delusion. In the Katyn Forest a few thousand unarmed Polish soldiers were mercilessly executed by Stalin's troops. They were unarmed, but trained and organized and brave and courageous and they died like vermin.
My original remark about how you didn't pass your A-levels in history was sarcastic, I admit. But now I'm thinking that maybe I'm right. Your grasp of massacre and oppression seems extraordinarily weak. Read The Gulag Archipelago or A Day in the Life of Alexander Denisovitch. Why didn't those oppressed peoples rise up? Because Stalin's thugs were the ones with the guns.
Your example about the Spanish Civil War is also kind of ... have you ever heard of the POUM Militia, the Workers Party of Marxist Liberation? They're one of the factions you talk about in the Spanish Civil War. Your countryman George Orwell fought briefly with them and wrote movingly about their courage. They died, horribly, for many reasons -- a lack of firearms being one of them. Go read Orwell's Homage to Catalonia.
Time to evolve and change?
It's always time to evolve and change, but I don't trust your judgment in how we should evolve and change. Not even a little bit.