Question: Who shot this political figure in Dallas, Texas whose autopsy was later performed, beginning at about 8 p.m. EST November 22, 1963, on the day of his assassination?

Context articles: Assassination of John F. Kennedy
North Shore (TV series)
Girls of Latitude
J. D. Tippit
38th NAACP Image Awards
Drew Carey's Improv-A-Ganza
40th NAACP Image Awards
John F. Kennedy autopsy
Christine Cushing Live
Food Paradise

John F. Kennedy, the 35th President of the United States, was assassinated on Friday, November 22, 1963 at 12:30 p.m. Central Standard Time in Dallas, Texas while riding in a motorcade in Dealey Plaza.
 Kennedy was fatally shot by a former U.S Marine, Lee Harvey Oswald, while he was riding with his wife, Jacqueline, Texas Governor John Connally, and Connally's wife, Nellie, in a presidential motorcade.
 A ten-month investigation by the Warren Commission from November 1963 to September 1964 concluded that Oswald acted alone in shooting Kennedy, and that Jack Ruby also acted alone when he killed Oswald before he could stand trial.
 Kennedy's death marked the fourth (following Lincoln, Garfield, and McKinley) and most recent assassination of an American President.
 Vice President Lyndon B. Johnson became President upon Kennedy's death.
North Shore is an American prime-time soap opera that aired on Fox every Monday at 8 p.m. EST (7 p.m. CST) for seven months in 2004 and 2005.
 It centered on the staff and guests of the fictional Grand Waimea Hotel and Resort (actually the real-life Turtle Bay Resort located near Kahuku, O'ahu) on Oahu's North Shore in Hawaii.
Girls of Latitude is a Canadian English language 30 minute documentary television special.
 Girls of Latitude premiered on November 13, 2008 at 9:30 p.m. EST on the Canadian specialty channel, MTV and on November 14, 2008 at 1:00 p.m. EST and the national television network, CTV.
J.D. Tippit (September 18, 1924 – November 22, 1963) was an American police officer who was an 11-year veteran with the Dallas Police Department.
 On a Dallas street, about 45 minutes after the assassination of President John F. Kennedy on November 22, 1963, Tippit was shot to death in a residential neighborhood in Oak Cliff.
 Lee Harvey Oswald was initially arrested as a suspect in Tippit's murder but later also became a suspect in the shooting of President Kennedy.
 Oswald was charged with both crimes shortly after his arrest.
 However, Oswald denied involvement in either of the cases.
 Before Oswald could be prosecuted for either crime, he was shot and killed, while in police custody, by nightclub owner Jack Ruby on November 24, 1963.
The 38th NAACP Image Awards honored the best in film, television and music for 2006.
 The show was televised live on March 2, 2007 on Fox at 8 p.m. EST at the Shrine Auditorium in Los Angeles.
 The show was hosted by LL Cool J.
 The nominees were announced on January 7, 2007, at a press conference in at the Peninsula Hotel in Beverly Hills, California.
 The winners and nominees are shown below.
 The winners are indicated in bold.
Drew Carey's Improv-A-Ganza is an improvisational comedy television program that aired in the United States on the Game Show Network.
 The program was hosted by Drew Carey and was produced at the Hollywood Theatre at the MGM Grand in Paradise, Nevada.
 The show premiered on April 11, 2011 at 8 p.m. EST.
The 40th NAACP Image Awards honored the best in film, television and music for 2008.
 The show was televised live on February 12, 2009 on Fox at 8 p.m. EST at the Shrine Auditorium in Los Angeles, California.
The autopsy of President John F. Kennedy was performed, beginning at about 8 p.m. EST November 22, 1963, on the day of his assassination and ending at about 12:30 AM EST November 23, 1963, at the Bethesda Naval Hospital in Bethesda, Maryland.
 The choice of autopsy hospital in the Washington, D.C. area was made by his widow, Jacqueline Kennedy.
 She chose the Bethesda Naval Hospital because President Kennedy had been a naval officer.
Hosted by Christine Cushing, Christine Cushing Live was a live cooking show that featured call-in questions and guests from the world of food and entertainment.
 The series aired (until 2005) weeknights at 6 p.m. EST on Food Network Canada and repeated daily at 8 a.m. and 1 p.m. EST.
 The series went into repeat sessions for the spring and summer months.
 It is no longer being aired.
Food Paradise is a television series narrated by Jesse Blaze Snider (formerly by Mason Pettit) that features the best places to find various cuisines at food locations across America.
 Each episode focuses on a certain type of restaurant, such as "Diners", "Bars", "Drive-Thrus" or "Breakfast" places that people go to find a certain food specialty.
 New episodes currently air on Sundays at 8 p.m. EST on the Travel Channel.