John F. Kennedy assassination conspiracy theories of the plot was thwarted, the authors allege, because it would have revealed embarrassing evidence of American government involvement with organized crime in plots to kill Castro. A 2003 Gallup poll indicated that nearly 20% of Americans suspected Lyndon B. Johnson of being involved in the assassination of Kennedy. Critics of the Warren Commission have accused Johnson of plotting the assassination because he "disliked" the Kennedys and feared that he would be dropped from the Democratic ticket for the 1964 election. According to journalist Max Holland, the first published allegation that Johnson perpetrated the assassination of Kennedy appeared in Penn
Assassination of John F. Kennedy in popular culture Dallas. It also has Robert F. Kennedy becoming President in the late 1970s, with Martin Luther King Jr. as his Vice President, after both men were saved from their assassinations in 1968 by the same time traveler. In Stephen Baxter's novel "Voyage" (1996), the Dallas assassination attempt only succeeds in crippling Kennedy, but Jacqueline Bouvier Kennedy is killed. Kennedy is re-elected in 1964 and commits the United States to landing a manned vessel on Mars, which occurs in 1986. The novel uses the assassination attempt only as the impetus for an alternate history US space program. Jeff Golden's 2008 novel