There is a place for "mature content" in comics and it may even be in some of the more mainstream titles. And DC Comics certainly has the right to play around in the Watchmen universe if they so choose.
During a single year of the not-great Harding presidency, four great cartoonists came into the world. Two of those 1922-born men died recently -- "The Family Circus" creator Bil Keane in November and the Joker creator (some say co-creator) Jerry Robinson in December.
Today we meet Miles Morales, a younger multiracial and multiethnic Spider-Man. Even though Morales may remind us of the Spider-Man we're used to in the more traditional Marvel universe, there are definite differences.