Choose your friend's wisely... I was unaware of the details of the Law of Parties and was surprised at it's implications. Round Rock Texan presented a convincing argument for the application of the law as it stands. I agree that it should be applied to offenders facing conviction. Adults should be held accountable for their actions and for being in situations with others that involve criminal activity.This should apply even in cases where the criminal activity escalates beyond that which the person intended.
As for the example that kseago gave, I would add that the gang of offenders would be culpable for their actions as a group. The gas station, the attendant and any witnesses to the comment "We're gonna kill tonight" would not be criminally responsible. They would have an ethical responsibility to report what they heard and let the police decide to follow up.