Here is a tongue-in-cheek reexamination of the 9/11 evidence:
I for one think it's well worth reading.
We in the US have a habit of accepting bullshit, which we then codify and seldom question. 9/11 is perhaps the best example of this. Believing that Hillary Clinton is not a criminal is another.
It may be too late to do anything about the former, but we certainly can correct the latter - but only if we really want to.