A number of young children in a particular community died under tragic circumstances.  Their parents feared that this was punishment for bad deeds they had committed.  They went to the Lubavitcher Rebbe seeking a Tikkun, a spiritual  rectification. ''A Tikkun?'' the Rebbe replied.....  "You must know that you've done nothing wrong.'' The Rebbe continued:  "It is the way of our world