Technically, 9/11 was recorded as a big event because the US only cares about people dying in their own country. No one ever made a memorial for the national socialists. They had children too! They just had the wrong demographic.
What if America was taken over by some evil ruler after a terrible economic event resulting in corruption? We'd probably be following some evil richardhead who'd lead us to the destruction. But in the end, when we were dead, broke, and without a government, we wouldn't even have a memorial for our loses.
I'm not saying what any of these people did were right, but people need to learn there's a lot more dying in the world than they think.