User blog comment:Tupka217/Young Justice Issue 12/@comment-173.165.239.237-20120206235930/@comment-1038387-20120207075922

Real world events are always tricky to explain in a comics world (among lots of other things). They all happened (9-11 happened in the mainstream comics too). I think it would cause a minor riot to people in New York if you said the tragedy didn't happen. Maybe Al-Qaeda had employed powerful mystics who shrouded them from sight or protected them against super humans (like Dragon King's web of spells that protected Japan during WWII). Maybe it simply wasn't in the League's scope in their early years.

World War II did happen; the Vietnam War did happen. In the comics, a couple of minor Freedom Fighters died at Pearl Harbor, trying to stop it. They couldn't. The only example I can think of where the outcome of a conflict was changed would be Watchmen, where Dr. Manhatten singlehandedly won the Vietnam War. But that changed everything after it.

I think it's nice that they acknowledge 9-11, but (especially in comics) superhuman conflicts so many times cause mass civilian deaths and property damage that its true significance has become lost.