Floating Sheep, a group of geography academics, created the "Geography of Hate," which maps racist, homophobic and ableist tweets in the U.S. Where are the most hateful, racist, homophobic tweets coming from? A "Geography of Hate" map can tell you...
ARTICLE AT MASHABLE: http://mashable.com/2013/05/13/geography-of-hate/
FLOATING SHEEP: http://www.floatingsheep.org/
INTERACTIVE MAP: http://users.humboldt.edu/mstephens/hate/hate_map.html#