It was not a great idea anyhow. It is heartless and meaningless for starters. If you really want remembrance then consider donating to a charity that actually helps those affected on that day. That will mean more and will surely be remembered. Secondly, if you were to to do this it's probably best to also remember all of the wars started, torturing, drone strikes, losses of freedom that have occurred all in the name of remembering 9/11. I'm not stating that it's too political but in all fairness it's a reality we must live with and face up to--or remembrance.
Let's remember 9/11 perhaps by making the world a better place to live.