Ok, here is some authority on the law regarding murder in NC, 1st and 2nd degree:
Pattern jury instruction guidance on the lesser included offense of 2nd degree murder:
"N.C.P.I. Crim. 206.00. FIRST DEGREE MURDER, PREMEDITATION AND DELIBERATION - SECOND DEGREE MURDER AS LESSER INCLUDED OFFENSE
State v. Strickland, 307 N.C. 274, at 289-91 (1983), in overruling State v. Harris, 290 N.C. 718 (1976), held that, when the indictment charges first degree murder by premeditation and deliberation, a trial judge is required to instruct on second degree murder only if the evidence tends to show a lack of premeditation and deliberation or would permit a jury rationally to find defendant guilty of the lesser offense and acquit him of the greater."
IMO, all sides would likely agree that either JY planned this murder or was not involved in it. I can't see why they would have a 2nd degree instruction in this case. Here's from a pattern jury instruction, coming after 1st degree and about to introduce 2nd degree:
"Second Degree Murder differs from first degree murder in that neither specific intent to kill, premeditation, nor deliberation is a necessary element."
Here's the pattern jury instruction for 1st degree murder with deadly weapon (they have one w/o too):
"For you to find the defendant guilty of first degree murder, the state must prove six things beyond a reasonable doubt:
First, that the defendant intentionally and with malice killed the victim with a deadly weapon.
Malice means not only hatred, ill will, or spite, as it is ordinarily understood, but it also means the condition of mind which prompts a person to intentionally take the life of another or to intentionally inflict serious bodily harm that proximately results in another person's death without just cause, excuse or justification. If the State proves beyond a reasonable doubt, (or it is admitted)5 that the defendant intentionally killed the victim with a deadly weapon or intentionally inflicted a wound upon the deceased with a deadly weapon that proximately caused the victim's death, you may infer first, that the killing was unlawful, and second, that it was done with malice, but you are not compelled to do so.6 You may consider this along with all other facts and circumstances in determining whether the killing was unlawful and whether it was done with malice.
[A firearm is a deadly weapon.] [A deadly weapon is a weapon which is likely to cause death or serious injury. In determining whether the instrument involved was a deadly weapon, you should consider its nature, the manner in which it was used, and the size and strength of the defendant as compared to the victim.]
Second, the State must prove that the defendant's act was a proximate cause of the victim's death. A proximate cause is a real cause, a cause without which the victim's death would not have occurred.7
Third, that the defendant intended to kill the victim. Intent is a mental attitude seldom provable by direct evidence. It must ordinarily be proved by circumstances from which it may be inferred. An intent to kill may be inferred from the nature of the assault, the manner in which the assault was made, the conduct of the parties and any other relevant circumstances.
Fourth, that the defendant acted with premeditation, that is, that the defendant formed the intent to kill the victim over some period of time, however short, before the defendant acted.
Fifth, that the defendant acted with deliberation, which means that the defendant acted while the defendant was in a cool state of mind. This does not mean that there had to be a total absence of passion or emotion. If the intent to kill was formed with a fixed purpose, not under the influence of some suddenly aroused violent passion, it is immaterial that the defendant was in a state of passion or excited when the intent was carried into effect.
Neither premeditation nor deliberation is usually susceptible of direct proof. They may be proved by circumstances from which they may be inferred, such as the [lack of provocation by the victim] [conduct of the defendant before, during and after the killing] [threats and declarations of the defendant] [use of grossly excessive force] [infliction of lethal wounds after the victim is felled] [brutal or vicious circumstances of the killing] [manner in which or means by which the killing was done]8 [ill will between the parties].9
And Sixth, that the defendant did not act in self-defense or that the defendant was the aggressor in provoking the fight with the intent to kill or inflict serious bodily harm upon the deceased."
The statute defining 1st degree and 2nd degree murder:
§ 14-17. Murder in the first and second degree defined; punishment
A murder which shall be perpetrated by means of a nuclear, biological, or chemical weapon of mass destruction as defined in G.S. 14-288.21, poison, lying in wait, imprisonment, starving, torture, or by any other kind of willful, deliberate, and premeditated killing, or which shall be committed in the perpetration or attempted perpetration of any arson, rape or a sex offense, robbery, kidnapping, burglary, or other felony committed or attempted with the use of a deadly weapon shall be deemed to be murder in the first degree, a Class A felony, and any person who commits such murder shall be punished with death or imprisonment in the State's prison for life without parole as the court shall determine pursuant to G.S. 15A-2000, except that any such person who was under 18 years of age at the time of the murder shall be punished with imprisonment in the State's prison for life without parole. All other kinds of murder, including that which shall be proximately caused by the unlawful distribution of opium or any synthetic or natural salt, compound, derivative, or preparation of opium, or cocaine or other substance described in G.S. 90-90(1)d., or methamphetamine, when the ingestion of such substance causes the death of the user, shall be deemed murder in the second degree, and any person who commits such murder shall be punished as a Class B2 felon.