Hundreds of Lindsay Clancy supporters have gathered to silently support the Massachusetts woman on trial in the killings of her three children. Many wore pink for Thursday's rally. Some had messages on their shirts like Peace For Lindsay and Justice For Lindsay. Many said they came to raise awareness about postpartum depression and also the mental health system treats women. Clancys lawyer does not dispute that she killed the children, but says she should not be held criminally responsible because she was mentally ill. The trial has brought attention to postpartum psychosis. Clancy's lawyer says she had the rare mental illness that is linked to the stress, sleep deprivation and hormonal changes that follow childbirth.