As a citizen of the US, I prefer to talk about my own country, since I have more historical context. And 9&#x2F;11 was a one-time event that hasn&#x27;t and can&#x27;t happen again, now that we&#x27;ve done things like reinforce pilot&#x27;s doors. Removing outliers is a pretty common thing.<p>Furthermore, it makes sense to start post-9&#x2F;11 since &quot;we&#x27;re in a different world now&quot; and all that rhetoric that politicians have been spewing since. This is about today&#x27;s political context, where 9-11 was the defining moment.