That image is not easy to look at, but I think it’s important to remember what it meant for America and to protect this date from demagogues and politicization. This event brought international terrorism to U.S. soil in a manner that dwarfed all previous attempts, and in consequence it, at least for a while, united all citizens of America.
The aftermath of what happened to U.S. polity and policy after 9/11 can be debated, but for a few weeks in September 2001, this was truly a nation united.
Here is bit from a comment on a blog post of mine from February 2, 2008 (the post from January 31) on how I felt on September 11, 2001:
Sure that Tuesday morning I was blindingly angry. I was woken in a vacation condo on the beach in Panama City Beach, Florida, to hear the World Trade Center towers were both struck by planes. When the media began reporting celebrations in Afghanistan I immediately thought of bin Laden (didn’t think of al Qaeda per se, but I was aware of bin Laden pre-9/11). My next thought was we should nuke that country back from its then (and now) Middle Age society to the Stone Age, or maybe to time before humans walked in Afghanistan.
That was my heart. I feel no less strongly about Islamic terrorism today than I did at that moment. I do know I think the US did very well for itself before 9/11, and to me nothing occurred that warrants changing our fundamental approach to the world.