It depends on how the war goes. I argue with the very premise. Vietnam was escalated on the basis on Johnson's personality, as well as a rather right-wing Joint Chiefs left over from the Eisenhower era which Kennedy generally came to disregard. Vietnam was very much LBJ's war, just as Laos may have been Nixon's war had he been elected in 1960 --- an outgrowth of how a president governs and their own personality.
However, on the basis on the idea, it depends on how the war progresses and what it looks like circa 1965. 1965 was around an "eh" era in the OTL. The war wasn't unpopular, but you could feel the seeds of transition. You'd get into the building polarization maybe just a year later. Let's assume an OTL progression/decomposition. From a psychological standpoint, it'd build the feeling that things had gone to hell in a hand basket after Kennedy was dead. The OTL had that, but it really wasn't fair in the years after Kennedy was shot. There was a mood of melancholy circa 64/65 because of JFK, but America had gotten back onto whatever track it wanted to be on, with the exception of the souring point of Vietnam. When shit hit the fan in 1967 and especially 1968, and rotted from there on out, we could look back and point to the Kennedy assassination as the seed of everything going wrong. Perhaps fairly, I'd argue, as it too a while but was the big change to the gradual fallout of the 1960s. But in this world, you'd have Kennedy assassinated right on the cusp of that unraveling of 1965, 1966, 1967, 1968...
No matter what sort of person does it, the act will be "spun" as the evil deed of the eeevil Right, and the Kennedy supporters will all discover that the U.S. was
always thoroughgoingly evil and vile.
http://www.amazon.com/Camelot-Cultu...&keywords=camelot+and+the+cultural+revolution
That book is improper and masturbatorily right wing, with conservative myth ideas so commonly espoused while easily debunked. I bought it expecting a proper discourse on a rather interesting idea (JFK's relationship to Liberalism and the movement's treatment of him), found out what it was, and it is now shoved somewhere under my television as a reminder to know what I'm buying rather than being interested in the concept only.