9/11 Report - Who knows, I don't know

My brother-in-law with dreadlocks has tried unsuccessfully to convince me that 9/11 was not what it seemed. My only conclusion about 9/11 is the obvious one - the airplanes that flew into the buildings caused their collapse. What other reason could there be?

Then today, another brother-in-law who has a very neat haircut sent me this video about 9/11.
Most unexpected, coming from him. Now I am rethinking it all over.

One point I made while debating 9/11 with my dreadlocked bro: Could the American public ever accept the idea of thier own government being behind the 9/11 events even if it was true? It's like hearing your dad is a murderer - true or not - the concept destroys the cornerstone of confidence in your life. The first stage of grief is denial. Is America in denial?