In his piece found here, Cut and Run, the Only Brave Thing to Do, he writes:
"In closing, there is one final thing I know. We Americans are better than what has been done in our name. A majority of us were upset and angry after 9/11 and we lost our minds. We didn't think straight and we never looked at a map. Because we are kept stupid through our pathetic education system and our lazy media, we knew nothing of history." (emphasis mine)
I have long suspected that some of our nation's fringy left wing conspiracy theorists were ignorant of history, incapable of thinking straight, stupid and had lost their minds on and after the 9/11 terrorist attacks but didn't want to mention it unless I had some indication of its truth. Moore seems to be confirming that for me.