The blatant distortions and whitewashing of US history have reached the point where the African slave trade and the Irish potato famine had nearly the same result:
http://www.washingtonpost.com/news/...cktracks-after-mothers-online-complaint/

Among the other distortions mentioned in the article: Thomas Jefferson wasn't that big a deal in the founding of the country, separation of church and state is an open question, and slavery was a secondary cause of the Civil War.

This highlights a need for parents to monitor their children's curriculum and be ready to step in and correct as necessary.