911 was an attack on Americans in America. It was an attempt to kill as many Americans as possible in a very dramatic manner. It was wholesale murder. I don't believe it was an act of war or a blow against democracy.
I do believe they knew what they were doing and that the effect on the economy of the nation would be devastating for some time to come. Otherwise why attack buildings that housed so many varied financial institutions. The Statue of Liberty is certainly more symbolic and an easier target.
Quadaffi has a long way to go to even begin to make up for Lockerby. Many of those people killed on that plane were from Syracuse University in the city where I work.
I know there is a fine line between one persons terrorist and anothers freedom fighter but I think that distinction is clear in this case.