American imperialism is a term referring to the economic, military, and cultural influence of the United States on other countries. The concept of an American Empire was first popularized during the presidency of James K. Polk who led the United States into the Mexican–American War of 1846, and the eventual annexation of the territories like California and the Gadsden purchase.

Thomas Jefferson, in the 1780s, awaited the fall of the Spanish empire: “… until our population can be sufficiently advanced to gain it from them piece by piece [sic].” In turn, historian Sidney Lens notes that “the urge for expansion – at the expense of other peoples – goes back to the beginnings of the United States itself.”

Effects labelled "cultural imperialism" occur without overt government policy.^{[citation needed]}Stuart Creighton Miller says that the public's sense of innocence about Realpolitik impairs popular recognition of U.S. imperial conduct. The resistance to actively occupying foreign territory has led to policies of exerting influence via other means, including governing other countries via surrogates, where domestically unpopular governments survive only through U.S. support.

Avram Noam Chomsky (/ˈnoʊm ˈtʃɒmski/; born December 7, 1928) is an American linguist, philosopher,cognitive scientist, historian, and activist. He is an Institute Professor and Professor (Emeritus) in the Department of Linguistics & Philosophy at MIT, where he has worked for over 50 years. Chomsky has been described as the "father of modern linguistics" and a major figure of analytic philosophy. His work has influenced fields such as computer science, mathematics, and psychology.

Ideologically identifying with anarcho-syndicalism and libertarian socialism, Chomsky is known for his critiques of U.S. foreign policy and contemporary capitalism, and he has been described as a prominent cultural figure. His media criticism has included Manufacturing Consent: The Political Economy of the Mass Media (1988), co-written with Edward S. Herman, an analysis articulating the propaganda model theory for examining the media.

According to the Arts and Humanities Citation Index in 1992, Chomsky was cited as a source more often than any other living scholar from 1980 to 1992, and was the eighth most cited source overall. Chomsky is the author of over 100 books. He is credited as the creator or co-creator of the Chomsky hierarchy, the universal grammar theory, and the Chomsky–Schützenberger theorem.

Howard Zinn (August 24, 1922 – January 27, 2010) was an American historian, academic, author, playwright, and social activist. Before and during his tenure as a political science professor at Boston University from 1964-88 he wrote more than 20 books, which included his best-selling and influential A People's History of the United States. He wrote extensively about the civil rights and anti-war movements, as well as of the labor history of the United States. His memoir, You Can't Be Neutral on a Moving Train, was also the title of a 2004 documentary about Zinn's life and work.

Zinn was born to a Jewish immigrant family in Brooklyn. His father, Eddie Zinn, born in Austria-Hungary, emigrated to the U.S. with his brother Samuel before the outbreak of World War I. Howard's mother Jenny Zinn emigrated from the Eastern Siberian city of Irkutsk.

Both parents were factory workers with limited education when they met and married, and there were no books or magazines in the series of apartments where they raised their children. Zinn's parents introduced him to literature by sending 10 cents plus a coupon to the New York Post for each of the 20 volumes of Charles Dickens' collected works. He also studied creative writing at Thomas Jefferson High School in a special program established by poet Elias Lieberman.

Christopher Eric Hitchens (13 April 1949 – 15 December 2011) was an English American author and journalist whose career spanned more than four decades. Hitchens, often referred to colloquially as "Hitch", was a columnist and literary critic for New Statesman, The Atlantic, The Nation, The Daily Mirror, The Times Literary Supplement and Vanity Fair. He was an author of twelve books and five collections of essays. As a staple of talk shows and lecture circuits, he was a prominent public intellectual, and his confrontational style of debate made him both a lauded and controversial figure.

Hitchens was known for his admiration of George Orwell, Thomas Paine and Thomas Jefferson, as well as for his excoriating critiques of various public figures including Mother Teresa, Bill Clinton, Henry Kissinger and Diana, Princess of Wales. Although he supported the Falklands War, his key split from the established political left began in 1989 after what he called the "tepid reaction" of the Western left to the Rushdie Affair. The September 11 attacks strengthened his internationalist embrace of an interventionist foreign policy, and his vociferous criticism of what he called "fascism with an Islamic face." His numerous editorials in support of the Iraq War caused some to label him a neoconservative, although Hitchens insisted he was not "a conservative of any kind", and his friend Ian McEwan describes him as representing the anti-totalitarian left.

Dylan Moran (born 3 November 1971) is an Irish stand-up comedian, writer, actor and filmmaker. He is best known for his sardonic observational comedy, the UK television sitcom Black Books (which he co-wrote and starred in), and his work with Simon Pegg in Shaun of the Dead and Run Fatboy Run. Moran also appeared as one of the two lead characters in the Irish black comedy titled A Film with Me in It in 2008. He is a regular performer at national and international comedy festivals including the Edinburgh Festival Fringe, Just for Laughs Montreal Comedy Festival, the Melbourne International Comedy Festival and the Kilkenny Comedy Festival. In 2007 he was voted the 17th greatest stand-up comic on Channel 4's 100 Greatest Stand-Ups and again in the updated 2010 list as the 14th greatest stand-up comic. In 2012, he became the first professional English-speaking comedian ever to perform in Russia, after two sold-out shows in neighboring Estonia, with his routine referencing Russia's new law banning "homosexual propaganda" and jailed oil tycoon Mikhail Khodorkovsky.