Marion Doss / Flickr Earlier this month, McGraw Hill found itself at the center of some rather embarrassing press after a photo showing a page from one of its high-school world-geography textbooks was disseminated on social media. The page features a seemingly innocuous polychromatic map of the United States, broken up into thousands of counties, as part of a lesson on the country’s immigration patterns: Different colors correspond with various ancestral groups, and the color assigned to each county indicates its largest ethnic representation.