When a comic book blogger offers this as an intro (and then delivers) my job is to just link to that post!
When you think superheroes, you think of them. All the others are
johnny-come-latelys or virtual unknowns. They've been around since the
40s, been off-and-on partners for at least half of that,
And they have been a mirror of American Society for that whole period.
Look down for a summary of how that is, why that is, and why Batman's
ascendancy shows an America in trouble.