I also went to high school in the United States 20 years ago, and have parsed my experience very differently than you. There were many morality and justice dec

I also went to high school in the United States 20 years ago, and have parsed my experience very differently than you. There were many morality and justice declarations about everyone but the United States, and then just...silence about the morality of US actions. They wouldn't say the US did wrong under any circumstances. I didn't learn about the firebombing of Dresden from History class, I learned about it from Vonnegut. I may have learned about the bombing of civilians in Hiroshima and Nagasaki in my history class, but their moral dimension was summed up by "It made Japan surrender," which is ahistorical bullshit. I didn't learn about the Tuskegee syphilis experiment at all, nor much at all about the racial prejudice that dominated American culture for a hundred years after the civil war (and continues to have lasting effects today). American History as taught in US high schools is hagiographic, make no mistake about it.