The first reflex in answering that question would be "duh!
Independence Day!" (aka ID4). Thing is, title aside, that isn't really about The American Holiday, or its spirit or ideals.
(As an aside, can we avoid letting argument about the degree to which The US lives up to those ideals dominate this thread? Given the question, some of that is unavoidable, but I hope the discussion can focus whether films have capture the topic, and duke it out about The US' greatness/failings elsewhere)
So if ID4 isn't the answer, what would be?
By way of example, :
- I would characterize Miracle on 34th Street as A Quintessential Christmas Film. It's set during the holiday season, and its plot focuses on things deeply associated with The US practice of Christmas (commercialism, the giving of gifts, a season of good will, and the importance of belief, particularly when believing his hard [by which manner it implicitly {rather than explicitly} addresses the the religious associations of the holiday]).
- To me, The Best Years of Our Lives is A Quintessential Memorial (or Veterans) Day Film. While not set on the holiday, it deals with the human costs of military service, why veterans deserve our understanding and gratitude (regardless of what we may think of the wars in which they have fought), and also what veterans owe themselves and others in getting on with their lives.
- Ben-Hur seems A Quintessential Easter Film. Its final acts not only use The Easter Story as a backdrop, but its themes of suffering, faith, forgiveness, and redemption all reflect the Christian meaning of the holiday.
There doesn't seem to be a film that is really about Independence Day. The closest I can think of is perhaps
The Patriot, but that film is really more of a war story about family and revenge, in which the causes behind US Independence are really more of muguffin than a theme or plot.
I won't belabor the ingredients that I think necessary for A Quintessential US Independence Day Film, because I'd like to see if anyone can identify one, and what reasons you see for declaring a film as such. So, any thoughts?