> we get the first terrorist act in history to reach millions of victims,
Depends how you define reach.
I can't buy dynamite without a bunch of onerous license requirements thanks to a variety of 70s "activists". I can't buy a bunch of fertilizer without getting on a list because the FBI doesn't like when people make them crispy. I can't call overseas without the metadata being recorded in perpetuity by the NSA because some terrorists hijacked some planes. So a nation of 300+mil has already been "reached" by plenty of terrorists if you count putting up with not directly violent but inconvenient BS.