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 the Kennedy assassination and that killing Oswald would spare "... Mrs. Kennedy the discomfiture of coming back to trial." An Italian Carcano M91/38 bolt-action rifle (see 6.5×52mm Mannlicher–Carcano cartridge) was found on the 6th floor of the Texas School Book Depository by Deputy Constable Seymour Weitzman and Deputy Sheriff Eugene Boone soon after the assassination of President Kennedy. The recovery was filmed by Tom Alyea of WFAA-TV. This footage shows the rifle to be a Carcano, and it was later verified by photographic analysis commissioned by the HSCA that the rifle filmed was the same one later identified as the