1ºAmericans are experiencing some sort of group idiocy at this moment. Racism and slavery are dark sides of history, but every country has had dark sides to some extent. I'm from Korea and our ancestors were sexist. They thought women should not do 'outside work' and should stay indoors. They had clothings that resemble the present day niqab for times women HAD to leave the house, to hide their body parts. Sexism is bad from the modern view, but that is just how our ancestors lived and that is the history we live on. Our history has its dark sides but also the bright sides including growth in economy, democracy, and civil rights. If you were only to focus on the negatives and delete all of them, you will be left with no history at all, is that really what you want? Where is your heritage? Where is your identity as a US citizen?