Whether you are a 9/11 Truther responding to the clear attack that labels the movement as a bunch of deluded kooks or you must react to the more subtle critique that the movement simply forges conclusions of conspiracy from a set of innocuous or unrelated circumstantial bits of evidence (http://tinyurl.com/r7n2g), I believe this 2004 essay provides a solid response that, yes, we may be paranoid, AND there is a damn good reason for it. It is the best explanation of 9/11 Truth psychology that I have read and has only been buttressed by more chunks of evidence of governmental complicity since Michael Hasty drafted it.
http://www.onlinejournal.com/artman/publish/article_203.shtml