I only know of one person who didn't know, George HW Bush.
It is very unpatriotic of you to imply that a great American like George Bush was involved in the JFK assassination. You should apologize immediately to the Bush family, especially after the recent loss of Barbara Bush./sarc
This YOUTUBE video lays out the methodology to PROVE a powerful conspiracy killed President Kennedy. Once you understand that methodology and more importantly the statistics behind it, you can then begin to understand how to PROVE who the conspirators were that killed Kennedy and then were powerful enough to control the investigation.
YOUTUBE 0.7 PROVING A CONSPIRACY KILLED JFK IS VERY EASY TO DO
There isn’t much that goes on in this world that ISN’T a conspiracy.