It's not really surprising that 67% of young US citizens are unaware of the Holocaust - US education is laughably inadequate in all regards. What's more concerning is that this story doesn't cite the thousands of illegal sterilizations performed on African-Americans during much of the 20th century, nor the syphilis experiments on African-Americans who were left infected in order that (white middle-class) doctors could study the progression of the disease at their leisure. The USA has always been an outlier in the OECD, full of dark acts and inhuman behaviors. Most US citizens however know only the Disney version of their history and thus embrace the very forces that lead to inhuman horrors. It's doubtful the USA can ever break free from this this condition.