If you believe conspiracy promotion by Lane, Garrison, et al., has contributed to greater anti-government views by the public, we should have had an outsider, a Trump-like person, elected president in the 1990s.
The JFKA is "The Mother of all Conspiracy Theories," and it gave impetus to others that came later, wouldn't you agree?
I mean, I mean, I mean (to use a James DiEugenio turn of phrase) can you think of a larger, more influential one?
Geraldo didn't show the stolen copy of the Zapruder film on national TV until 1975.
These things take time.
How about voter apathy?
Has the percentage of eligible voters who actually vote been rising, falling, or staying the same over the past 61 years?