Doctrine (from Latin: doctrina) is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the body of teachings in a branch of knowledge or belief system. The Greek analogue is the etymology of catechism.

Often doctrine specifically connotes a corpus of religious dogma as it is promulgated by a church, but not necessarily: doctrine is also used to refer to a principle of law, in the common law traditions, established through a history of past decisions, such as the doctrine of self-defense, or the principle of fair use, or the more narrowly applicable first-sale doctrine. In some organizations, doctrine is simply defined as "that which is taught", in other words the basis for institutional teaching of its personnel internal ways of doing business.

Examples of religious doctrines include:

One department of the Roman Curia is called the Congregation for the Doctrine of the Faith. Also shows other doctrines involved in the shape of government and politics.

Naomi Klein (born May 8, 1970) is a Canadian author and social activist known for her political analyses and criticism of corporate globalization.

Klein was born in Montreal, Quebec, and brought up in a Jewish family with a history of peace activism. Her parents had moved to Montreal from the U.S. in 1967 as war resisters to the Vietnam War. Her mother, documentary film-maker Bonnie Sherr Klein, is best known for her anti-pornography film Not a Love Story. Her father, Michael Klein, is a physician and a member of Physicians for Social Responsibility. Her brother, Seth Klein, is director of the British Columbia office of the Canadian Centre for Policy Alternatives.

Her paternal grandparents were communists who began to turn against the Soviet Union after the Molotov-Ribbentrop Pact and had abandoned communism by 1956. In 1942 her grandfather Phil Klein, an animator at Disney, was fired after the Disney animators' strike, and went to work at a shipyard instead. Klein's father grew up surrounded by ideas of social justice and racial equality, but found it "difficult and frightening to be the child of Communists", a so-called red diaper baby.

Ralph Nader ( /ˈneɪdər/; born February 27, 1934) is an American political activist, as well as an author, lecturer, and attorney. Areas of particular concern to Nader include consumer protection, humanitarianism, environmentalism, and democratic government.

Nader came to prominence in 1965 with the publication of his book Unsafe at Any Speed, a critique of the safety record of American automobile manufacturers in general, and most famously the Chevrolet Corvair. In 1999, an NYU panel of journalists ranked Unsafe at Any Speed 38th among the top 100 pieces of journalism of the 20th century.

Nader is a six-time candidate for President of the United States, having run as a write-in candidate in the 1992 New Hampshire Democratic primary, as the Green Party nominee in 1996 and 2000, and as an independent candidate in 2004 and 2008. Some people claim that Nader acted as a spoiler in the 2000 U.S. presidential election, while others, including Nader, dispute this claim.

Nader was born in Winsted, Connecticut. His parents, Nathra and Rose (née Bouziane) Nader, were immigrants from Lebanon and members of the Maronite Church. His family's native language is Arabic, and he has spoken it along with English since childhood. His sister, Laura Nader, is an anthropologist. His father worked in a textile mill and later owned a bakery and restaurant where he talked politics with his customers.

Jedi Mind Tricks (JMT) is a hip hop duo with Vinnie Paz from Philadelphia, Pennsylvania and Jus Allah from Camden, New Jersey. The group was founded by two high school friends, rapper Vinnie Paz (Vincenzo Luvineri) and former producer/DJ Stoupe the Enemy of Mankind (Kevin Baldwin). In 1999 the New Jersey rapper Jus Allah (James Bostick) joined the group to record the second studio album by JMT, Violent by Design but left shortly after for reasons that remain unexplained. The track "The Rebuilding" (2006) marked his unofficial return to JMT since the split, but made a full fledged return aside Vinnie Paz for the sixth studio album, A History of Violence (2008). In September 2011, Vinnie Paz officially announced the departure of Stoupe the Enemy of Mankind from the group, because "his heart wasn't in making JMT records anymore".

DJ Kwestion is also a part of the group, mainly scratching choruses on the turntable. Kwestion (or Kwes) is also a part of the group Skratch Makaniks. Kwestion was a replacement for JMT's previous tour DJ, Drew Dollars, who is no longer affiliated with the group.

Vincenzo Luvineri (born August 19, 1978), better known as Vinnie Paz (formerly known as Ikon the Verbal Hologram), is an Italian-American rapper and the lyricist behind the Philadelphia underground hip hop group Jedi Mind Tricks. He is also the frontman of the hip hop supergroup Army of the Pharaohs.

Originally taking the pseudonym of Ikon the Verbal Hologram, he later changed his name to Vinnie Paz, after the Rhode Island boxer Vinny Pazienza. Paz originally started rapping with fellow Jedi Mind Tricks member Stoupe in his basement. Paz is known for his raw and gritty lyrical delivery. He is also known for his extensive use of studio punch-ins, seldom recording a verse in one take. His lyrics frequently contain references to religion, war, politics, mythology, conspiracy theories, and the paranormal. His more recent albums such as Servants in Heaven Kings in Hell show a more obvious approach to politics and world issues. This gritty style of Paz became apparent with the release of Violent by Design, and has become progressively more defined since its release. Vinnie Paz has a number of aliases, including Louie Doggs, Vinnie P, The Pazmanian Devil, Pazienza, Frank Vinatra, Vin Jong Ill, Rumplestiltsvin, Muhammad Al Vinejahd, and Vin Laden. Raised Catholic, Vinnie Paz is now a Muslim, which plays a major role in much of his lyrics. Vinnie is also a heavy metal fan, and occasionally uses song titles and band names in JMT tracks and lyrics.