Good intentions but lacks quality
Look, I'm happy that someone made a 9/11 tribute video, and I won't go into detail about all the political and patriotic connotations of it. I had a relative at the Pentagon; but right now I'm merely concerned with the flash itself.
First of all you made some big grammatical mistakes, and yes, it matters. Second, there was no visuals; not even a flash drawing of the NYC skyline or whatever. It's odd to have a tribute video without showing a picture of the thing your giving tribute to. I will admit the song was nice, but what egged me was that you abruptly cut the song off at the end and skipped to the final scene of text. Why not let it finish? And gray and black are bleak colors, unless you are conveying the image of a dark and sad day, why not add some color?
Yes, it's good that you did this to remember those whose lives were lost unjustly in that tragedy, but I don't think Newgrounds is the place for this.