After watching JFK 2..........................................?

Question:

After watching JFK 2...........................

It has only confirmed my opinion that there was no way Lee Harvey Oswald killed Kennedy , or if he did he was not alone and there has been a huge cover up. If you have not seen this film it names the people they think was involved. So my question is why are these people ( at least the ones who are still alive ) investigated ?
Magic bullet theory my **** , it's about time everyone not just americans learned the truth.

Best Answer - Chosen by Asker: .Get hold of the book Executive Action. There was a film made of this as well. This book will open your eyes.
The subject matter was so sensitive that the actor Burt Lancaster funded the film himself.