If you would like to send your condolences to the Kletzky family, please email email@example.com
The organizers of this e-letter drive hope to collect 10,000 letters before the end of this weekend, and 100,000 letters by the end of the shiva. Please put your social media to work and advertise this through your Facebook, Twitter, Google+, email lists, etc.
If you would like some advice on how to discuss these kinds of tragedies with your children, check out this article at Aish that was written following 9/11: Talking to Our Children About the Tragedies.
Shabbat shalom, and may these kinds of tragedies cease to exist soon.