How was society affected by 9/11?

9/11 affected society in many ways. Mostly in fear and paranoia. For example the anthrax scare. There was never an anthrax attack and no substantial evidence there was going to be one but still when people experienced 9/11 society asked its self: Why not an anthrax attack? Although the events of September Eleventh frightened people beyond belief they also led to some outstanding examples of working together for a common goal. I find it amazing that the world leaders recognized the threat of Al Qaeda posed and lead a swift attack on the Taliban which was accused of hosting Al Qaeda. But after that there was another case of paranoia in society. America invaded Iraq accusing them of developing nuclear weapons yet found them but still occupied Iraq for several more years. 9/11 had produced an enemy without boundaries and who had access to cutting edge technology from the fifth epoche and society reacted with panic and with the determination to find it's enemy and neutralize them.