http://www.usnews.com/news/blogs/washington-whispers/2011/06/30/harvard-july-4th-parades-are-right-wingAccording to Harvard, all this Independence Day celebration is just because we're conservative.
Funny, but where I live now (Upstate NY) is quite conservative, and there are a LOT of Independence Day parades and fairs. So many in fact, that some towns celebrate a week early or a week late to avoid conflicts and get more people attending. One local city (which is surprising because the city itself is pretty liberal) even has a Flag Day parade!
Where I grew up in NJ (far more liberal) the big parade in the area was on
Labor Day.
Probably because May Day isn't a Federal holiday in this country. (Yet...
)