"talking about 9/11 behind a computer is one thing...but saying it to New Yorkers in person?"
The depressing thing is that people like him/her are becoming more and more common on the internet. Youtube is awash with these sorts of comments.
Well adjusted people with a normal emotional balance just don't do this stuff. Don't even think of this stuff.
Maybe we should feel sorry for the original poster. Clearly has a wide range of issues that need looking at.