Unfortunately because of anti-American leftwingers like Oliver Stone (like the leftist Mark Lane earlier who ruined the thinking of thousands of college kids) and his disgraceful movie "JFK" - which was widely praised and shown around the world - many younger Americans believe there was a conspiracy. The movie was shown in history classes in public schools at the time of its release. Maybe it still is. So I think the Museum has to at least indirectly if not directly mention this fact and present - fairly but not uncritically - the major theories, e.g., grassy knoll shooter.
As we know since the assassination more than half - sometimes up to 70% of Americans - believed there was a conspiracy. And many people around the world also believe there was a conspiracy. Earl Warren said that after the release of the WC report that when he went overseas to lecture or give speeches that he often received critical questions about the report. People in Europe, for example, simply didn't believe the lone assassin explanation. Fred Litwin talked about leftwing Canadians using the CBS CBC (the Canadian national TV network) to promote these conspiracy claims.
So, again unfortunately I don't think the Museum can ignore the overall conspiracy view, a view that is probably held by most people and not just Americans. This is not like the Lincoln assassination.