how innocent people were back then, not having a car with protection for a President to drive around in. There was a safety "bubble" for limo that the Secret Service recommended to JFK that it was safe to remove. Secret Service also "stood down" just before the limo rounded the corner to drive in front of the book depository: https://www.youtube.com/watch?v=XY02Qkuc_f8 The Kennedy's put their unquestioning Trust into the hands of the Secret Service.  That was their first mistake.  That is why Jacqueline gave up all secret service protection and ran to Onassis, (after Bobby was killed). Onassis was a wealthy man who could provide her with the protection she needed from the deep state.....(also he offered her a lot of money become his wife).  But the primary reason was the physical security Onassis could provide for her and her children.  Jackie did not trust the secret service.....and she never saw this video which was hidden for decades.