Forces of nature were responsible for Katrina and a criminal was responsible for the chickens.

Attributing it to sin is another way to control a group of innocent people. Its called victimizing the victim and is a highly effective way to absolve the responsibility of those directly involved.

Many others made it possible for Shevach to commit this crime and many others are responsible for the disaster of New Orleans. There is no way the victims should be held accountable to provide cover for those who are responsible.