!42! Topic #12: Responsibility

Let's talk about responsibility. 

A person is responsible for his or her own actions.  Unless:
*The person is under the influence of drugs or alcohol.
*The person is temporarily or permanently insane according to the legal definition.
*The person was coerced by another person.
*The person is under 18 years of age (In some situations; in others, minors are still held responsible.).

There may be a few other exceptions, but these are the main legal ones.  Do you agree with all of these?  What about if a person is ignorant of the consequences of his or her actions?  Should the person still be held responsible?
What about a LACK of action?  If you could have prevented something from happening, but you didn't, are you responsible for it?  For example: this weekend, on the news there was a story about a man who was stabbed in Portland, and collapsed, bleeding, on the sidewalk.  Several people walked by and did nothing to help -- one person took a photo on his phone; another lifted up the body and then put it back down and left -- and the man died, at least partly because nobody called 911.  Were those people responsible for his death?  Or was it the person who stabbed him?  Or was it the society that created a culture of violence, and also allows people to stay out of other people's problems?  Was it the person who sold the knife to the stabber?  Was it the victim for starting the fight?  The police for not stopping it?  The parents of the stabber for not teaching him or her right from wrong?  God's fault?  The devil's?

Answers of some kind by next Monday, please.