Unfortunately, the paper the map is based on costs ten dollars[1], which seems odd for a paper from a think tank. Apparently, Cato sells a lot of books/papers[

Unfortunately, the paper the map is based on costs ten dollars[1], which seems odd for a paper from a think tank. Apparently, Cato sells a lot of books/papers[2]. Is that a common practice for think tanks (I have no idea)? [1] http://store.cato.org/reports/overkill-rise-paramilitary-police-raids-america http://store.cato.org/reports/overkill-rise-paramilitary-pol... [2]http://store.cato.org/books http://store.cato.org/books