Whitewashing is the act of glossing over or covering up vices, crimes or scandals or exonerating by means of a perfunctory investigation or biased presentation of data with the intention to improve one's reputation. The first known use of the term is from 1591 in England. Whitewash is a cheap white paint or coating of chalked lime that was used to quickly give a uniform clean appearance to a wide variety of surfaces, such as the interior of a barn. In 1800, in the United States, the word was used in a political context, when a Philadelphia Aurora editorial said that "if you do not whitewash President Adams speedily, the Democrats, like swarms of flies, will bespatter him all over, and make you both as speckled as a dirty wall, and as black as the devil." In the 20th century, many dictatorships, authoritarian and totalitarian states used whitewashing in order to glorify the results of war. For instance, during the Warsaw Pact invasion of Czechoslovakia following the Prague Spring of 1968, the Press Group of Soviet Journalists released a collection of "facts, documents, press reports and eye-witness accounts." Western journalists promptly nicknamed it "The White Book", both for its white cover and its attempts to whitewash the invasion by creating the impression that the Warsaw Pact countries had the right and duty to invade. In the study of reputation systems by means of algorithmic game theory, whitewashing refers to the abandonment of a tarnished identity and creation of a blank one, which is more widely known in internet slang as sockpuppeting. Some critics have accused Michelle Alexander's The New Jim Crow of being whitewashed due to the bias of its conceptual framework. It omits pertinent African American people and history, as well as politically radical ideas in favor of a more conventional and mainstream perspective. According to the Eastern Europe and Central Asia desk director for the International Federation for Human Rights, Ilya Nuzov, Russia is trying to whitewash the country's repressive Stalinist past.