The criminal justice system presupposes people generally are free to decide whether or not to engage in criminal behaviour. However, the courts acknowledge not everyone has free will.
In three years, 173 people died from 17 ramming vehicle attacks worldwide. This week, Victoria police announced a policy supporting officers to shoot drivers of weaponised cars.
Not all terrorist incidents have mental illness as a causal factor, and most violent acts are committed by people without a mental illness.