Numerous surveys have shown that 2/3 to 3/4 of adults in the Western world reject the WC's lone-gunman theory.
Which is an indication of just how pervasive and influential KGB disinformation ops have been ever since it set up Department D in the First Chief Directorate (today's SVR) and Department 14 in the Second Chief Directorate in 1959 and started applying them to the JFK assassination literally on Day One (11/22/63) via Morris Childs (FBI's SOLO) in Moscow.
The KGB's "Master Plan" / "Master Plot" of getting us to defeat ourselves by waging disinformation, "active measures," and mole-based strategic deception counterintelligence operations against the CIA, the FBI, and the intelligence services of our NATO allies which began in 1959 (see above) really came to fruition after it planted an article in the Communist-owned Italian newspaper Paese Sera in March 1967 which motivated overly ambitious, scandal-plagued, and revengeful Jim Garrison to change his theory against Clay Shaw from "He masterminded the homosexual 'thrill kill' assassination of JFK!" to "He was a "highly paid contract agent" for the evil, evil CIA, and he organized the assassination for it!!!"
How many times have you watched the self-described mythological ("to counter the myth of the Warren Report") movie, "JFK," by Garrison's hagiographer, Oliver Stone, now, Griffith?