I like what you have to say, but I will be honest. Hate radio is what started this journey for me back in the 1980s and there was no mythical time you could have a polite conversation in the US about politics. The whole politics ruining Thanksgiving has been going on since the Vietnam War and the concept probably dates back to before the Revolutionary War in the US.
Before Vietnam the US literally purged everyone that was too left with McCarthyism. Before engagement algorithms there was constant propaganda on all TV channels, radio, and print designed to do everything from break up unions to reinforce the Christian Nationalist movement. Think adding In God We Trust to all money in 1955.
I see where you are coming from as I was once there long ago. When you unravel the propaganda/lies you begin to see the bigger picture and understand why the forces that control us work so hard to misinform and create an alternative reality where America is the good guy.
The reckoning of what the US has done and continues to do is truly insurmountable for a typical human being. Mutual understanding easily becomes a tool of oppression where we are expected to forget all of history and culture to compromise with people who are selfish and misinformed.
You can give someone who wants to destroy you all the respect in the world and it won't change that they want to destroy you and will given the chance. This is the reality we face and harkening back to an imagined time of mutual respect is not the panacea we would like to think it is.