If your curriculum covers the Korean War, it goes like this: After WW2, there was North and South Korea aligned with the Soviets and Americans, respectively. Then, one day the North attacked the South unprovoked! Through the UN, America scrambled to defend its ally cause the silly Soviets were boycotting! We were able to push the North out of the South and restore the borders! :)
Nothing about the US' obstructionism towards the creation of the PRK, nothing about how the US handpicked Syngman Rhee, nothing about the Jeju Uprising, nothing about the mass politicide being done in the south that led to northern intervention, nothing about the south keeping colonial administration, nothing about the American massacres of Koreans during the war, nothing about the genocidal level of bombing done by the Americans, nothing about Soviet involvement in the war.
I've told liberals who aren't completely brainwashed about this stuff, and they're shocked and a little disturbed, but it's never enough to change their convictions.
Weirdly, you can read about most of this from Wikipedia. It doesn't even need to be hidden anymore from the American people. :agony-deep: