Under which condition is a person not guilty of a crime except for murder, according to coercion as a defense?

The condition in which a person is not guilty of a crime, except for murder, in relation to coercion as a defense is that a person believed the act was necessary to prevent imminent death or great bodily injury. This defense, often referred to as the "necessity" defense, recognizes that individuals may be compelled to act in ways that would otherwise be considered criminal when faced with immediate threats to their life or physical safety.

In this context, the law allows for the possibility that the urgency of the situation justified the otherwise unlawful actions taken by the individual. It emphasizes that the individual acted out of a perceived necessity to protect themselves or others from serious harm, thus negating guilt for most crimes under those circumstances, provided the belief was reasonable and the response was proportional to the threat faced.

This principle does not widely apply to murder due to the serious moral and legal implications surrounding the taking of life, which is why the exception is specifically noted. Understanding this legal nuance is important because it illustrates the balance between societal protection and individual rights in crisis situations.