The Voices Strike Again

This is a sad story from San Francisco:

A woman who was hearing voices tossed her three young children off a pier into San Francisco Bay, authorities said. Rescuers had found one body, and the other two children were feared dead.

The mother, Lashaun Harris, 23, of Oakland, was booked on three counts of murder, the San Francisco Chronicle reported in Thursday's editions. Her children were identified as Trayshaun Harris, 6, Travante Greely, 3, and Joshua Harris, 1.

A child's body was found about four hours after a witness reported seeing a woman drop the children into the bay near Pier 7 Wednesday, said Jonathan Guerra of the U.S. Coast Guard.

Why is it the voices never tell people to do good things?