Read anything written about psychology from 1963 - 1970, after the Kennedy assassination, and it is all about the violent sociopathic mind.
People tied themselves in knots for a decade trying to explain to themselves how somebody could shoot Kennedy, rather than just owning up to the fact that Oswald was a Communist, and Communists use violence for political purposes.
Oswald reported to James Jesus Angleton, the counter-intelligence chief for the CIA.
They taught him Russian while he was a Marine in Japan.
They sent him to Russia armed with data on the U-2 spy plane so the CIA could disrupt Eisenhower peace talks with Russia.
They brought him back to America for “other duties as assigned”.
What Lee didn’t know was that one of those duties was to be the patsy for the JFK assassination.
References (please check them out...):
Judyth Vary Baker—Me & Lee: How I Came To Know, Love and Lose Lee Harvey Oswald
Newman—Oswald and the CIA
Epstein—The Assassination Chronicles