"To those who don't want the truth about Kennedy's assassination to become known, the very repetition of a charge lends it a certain credibility, since people have a tendency to believe that where there's smoke, there's fire"

This quote by Jim Garrison suggests that individuals are more likely to think something if it is repeated frequently enough. He is suggesting that the truth about Kennedy's assassination is being suppressed, and that the more it is duplicated, the more people will believe it. He is suggesting that the reality is being concealed, which the more it is duplicated, the most likely it is to become accepted as truth. He is also suggesting that people tend to think that if something is repeated frequently enough, it must hold true. This quote suggests that the truth about Kennedy's assassination is being concealed, which the more it is repeated, the more likely it is to end up being accepted as truth.