When assessing the objective gravity of defensive homicide (or analogous offences involving coerced killing), the context of the threat — including the offender's vulnerability, history of domestic violence, cognitive impairments, and impaired judgment — must be weighed against factors such as the brutality of the attack and the opportunity to flee. A foregone chance of acquittal on the basis of duress or self-defence is a significant mitigating factor on a plea of guilty.
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