President Obama inspires strong feelings, some positive, some negative. This composite image shows Obama at two separate events. AP and Getty Images/NPR hide caption

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An enumerator interviews a woman for the 1940 census. Veiled in secrecy for 72 years because of privacy protections, the 1940 U.S. census is the first historical federal decennial survey to be made available on the Internet initially rather than on microfilm. National Archives at College Park hide caption

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James Gilchrist of Orlando, Fla., attends a rally for slain teenager Trayvon Martin in Sanford, Fla., on Thursday. Trayvon was wearing a hoodie when he was shot. Roberto Gonzalez/AP hide caption

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Politeness seems to be falling by the wayside these days, with phrases like "you're welcome" replaced by the more casual "you bet" or "no problem." Good manners were more the norm in 1960, when these kids at a junior theatrical school learned how to curtsy and bow. Chris Ware/Keystone Features/Getty Images hide caption

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You know you're campaigning in the South if you've got comedian Jeff Foxworthy by your side. Foxworthy introduces Mitt Romney at a campaign stop at the Whistle Stop Cafe, Monday, in Mobile, Ala. John David Mercer/AP hide caption

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President Obama, seen here at a conservation event at the Department of the Interior in March 2012, has reportedly suggested a movie adaptation to Harvey Weinstein. Mandel Ngan/AFP/Getty Images hide caption

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Conservative talk show host Rush Limbaugh talks with guests at the White House in 2009. Limbaugh apologized March 3 to Georgetown University law student Sandra Fluke after he branded her a "slut" and "prostitute." Ron Edmonds/AP hide caption

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Google new privacy rules, which are set to take effect Thursday, have drawn scrutiny from privacy advocates and state officials. Jens Meyer/AP hide caption

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Leap day is the perfect moment to contemplate time. Here a man looks at the Seine river through the giant clock of the Orsay Museum in Paris. Pierre Verdy/AFP/Getty Images hide caption

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Chris McDonough, a Republican (left), and Robert O'Brien, a Democrat, argue about political issues outside a caucus in Portland, Maine, in February. Robert F. Bukaty/AP hide caption

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Depending on how you tally them up, there have been 26 debates so far this GOP primary season. How many is too many? Brian Snyder /Reuters /Landov hide caption

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