I'm not licenses in WI, but if you don't have a SD claim when three grown men are chasing you in the middle of a riot, one is yelling 'kill him' and one hits you repeatedly with a skateboard, then you will never have a SD claim
But do you have an SD claim while in the commission of a crime? Can you, for example, claim self defense if you shoot an armed guard who is pointing a gun at you while you are in the process of robbing a bank? No, of course not.
Perhaps through all of his cross examination of KR regarding how KR came to obtain the firearm, prosecution is attempting to establish that KR's possession of the rifle in public that night was unlawful, therefore he loses any claims of justification for any actions carried out with that firearm.
Is there a threshold, such as a misdemeanor vs. a felony, that must be crossed before claims of self defense are no longer valid? i.e. if you are attacked while jaywalking and defend yourself with deadly force vs. the bank robbery example above?
To me it is a clear cut case of poor judgement on the part of a 17 year old to put himself in that situation that night, but also a clear cut case of justifiable self defense.
Were I on the jury, the only thing that I would convict KR of would be violation of
Wisconsin Statute 948.60 Possession of a dangerous weapon by a person under 18, which is a Class A misdemeanor. However, the awkward wording of 948.60 3(c) might even acquit KR of that charge as well. I'm convinced that the exception in 948.60 3(c) doesn't apply to KR, but others that I respect are convinced that the exception does apply to KR.