Students in a Humboldt State University class for Advanced Cartography spent the last semester creating the Geography of Hate, which organized Twitter hate speech into an interactive map. The results aren't too shocking. The data is composed of 150,000 tweets sent in the U.S. between June 2012 and April 2013 using hateful words. Each tweet was placed into categories: positive, neutral and negative.
The map is broken down by racism, homophobia and negative comments made against the disabled by the least to most hateful tweets. They got really granular; they list the individual hateful words in drop down menus. Play around with it and see just how vile we are as Americans, as if you didn't already know.