"When governments cover something up, a lot of lies are told. False witnesses are provided. Lying (and even probably some sincerely honest) "experts" are provided to explain and support the lies. False data is quoted as gospel. A great deal of effort is made in the media to support the lies."

Don't forget that ANY group with a mission can do the same thing. It does not have to be a government that lies - any group with an agenda can produce the same "experts" and tell their own "lies".

Our distrust of government should not cloud our views that there are other groups that would love to use this to their advantage. While people often say that the government used 9/11 to push their war, it should also be stated that anti-government groups are using 9/11 to push their views as well.   

People are gullible. Propaganda works both ways.