Anyone who relies on the Mainstream Media wouldn't know about this. As they don't report on it. There is a wealth of information these people wrote about what they did.
There is a wealth of information of people who tried to tell the govt about the JFK assassination. It was discovered that they weren't accepting information. That's right!
Research about the Revele (not sure if that's exactly right) investigation about the Marseilles assassins hired through the mob for our intel (They would fit in good and looked more like Americans and could be disposed of. I believe there is an Men who Killed Kennedy segment on this where when the investigation was completed he tried to turn it over to the govt to verify and make official. They were not interested! Why?
There was a deaf mute who went to the authorities about activity on the Grassy Knoll, they weren't interested.
Look what happened to the mob leaders testifying at the House Committee on assassinations about it.
The book Regicide has photocopies of an intel ‘conference record’ listing the 20 or so people involved in the plot.
There were witnesses who complained to Garrison that the authorities would not accept their accounts.
The authorities took Jean Hill into custody that day and told her not to say a thing to anybody about the shot she saw from the Knoll.
Why weren't all the many Knoll witnesses not included in the official investigation?
This is the tip of the iceburg, there really needs to be an in-depth book listing all these accounts together.
***To accept the government, et al, had anything to do with the murder of Kennedy would require an untold number of people to, be involved, be knowledgable, and be able to keep a secret.***
Here's a good example of the garbage that has been published about this case. The author of Regicide, "Gregory Douglas", is a fraud and a forger.
http://www.fpp.co.uk/docs/Irving/RadDi/2002/100602.html