Kennedy also mounted gifts he received from visiting dignitaries, such as a rifle on one wall and a
ceremonial sword on another. He also had framed photos of famous people and meetings and
“regularly changed the photos with newer ones,” says Matteo.
Did a quick search and found the .pdf describing the set preparation for a movie about the Kennedys. It states that the rifle was a gift, but goes into no more detail. If you are really interested you might try to contact the JFK Library or visit their WEB site.
A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman