 ::::While saying he killed himself is perfectly normal, saying he killed 33 people without the qualifier (including himself) is IMHO unusual and potentially confusing. Either of the above options are okay altho shot and killed 32 people before commiting suicide is probably the better option. On the other hand, saying 33 people died in the incident is normal but saying 33 people were killed is similar strange. In other words, while it's normal to say someone killed themselves when they commit suicide, it's not usually normal to count them as people 'killed' unless you specify the total includes them. Also while I'm not an expert on US law, I'm pretty sure Bueller is right and the law doesn't define killing. It may define homicide. But even then 88's description doesn't seem accurate because I'm pretty sure justifiable homicides are not considered murder or manslaughter in US law  