The map, created by Dustin Cable at University of Virginia’s Weldon Cooper Center for Public Service, is stunningly comprehensive. Drawing on data from the 2010 U.S. Census, it shows one dot per person, color-coded by race. That’s 308,745,538 dots in all–around 7 GB of visual data. It isn’t the first map to show the country’s ethnic distribution, nor is it the first to show every single citizen, but it is the first to do both, making it the most comprehensive map of race in America ever created.

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