A parent rolls over in their sleep and suffocates their infant. A tragic accident. Writing up the cause of death as unintentional homicide, or even an accident

A parent rolls over in their sleep and suffocates their infant. A tragic accident. Writing up the cause of death as unintentional homicide, or even an accident, won't do anybody any favors; it would only cause emotional anguish to the parents. So instead the cause of death is "SIDS." I'm not saying this is what happens in every instance, but it's probably the way it happens at least some of the time.