Reginald Jackson v. State of Mississippi, 174 So. 3d 232

On Dec. 9, 2011, JSU students Roger McDowell and Oliver Robinson were confronted by Derrick Course and Reginald Jackson; Course displayed a knife and demanded McDowell’s iPhone; McDowell surrendered it after being assaulted.
Course and Jackson fled, hid in a dorm room; police recovered two cell phones, a pocket knife, and money on Course; no property was recovered from Jackson.
Course and Jackson were jointly indicted for armed robbery; they were tried separately; Jackson was convicted by a Hinds County jury and sentenced to 30 years (5 suspended).
On appeal Jackson argued: (1) prosecutorial misconduct in opening and closing (misstatements including repeated references to a gun, claiming Jackson was caught "red-handed," and urging the jury to "finish this"); and (2) insufficiency of proof that the knife was a "deadly weapon."
Trial counsel made no contemporaneous objections to the challenged prosecutorial remarks; the jury received an instruction defining "deadly weapon."
The Mississippi Supreme Court affirmed, holding the misconduct, while improper, did not amount to reversible or plain error given the evidence; the deadly-weapon determination was for the jury and the instruction was proper.

Issue	Jackson's Argument	State's Argument	Held
Prosecutorial misconduct — gun references and misstatements	Repeated references to a gun and factual misstatements deprived him of a fair trial	Remarks were erroneous but not so extreme as to constitute plain or reversible error, and defense failed to object	Court held misconduct improper but not reversible; procedural default absent plain-error showing; affirmed
Prosecutorial misconduct — "finish this" / appeal to jury duty	"Finish this" and appeals to victims pressured jury and paralleled forbidden "send-a-message/do-your-duty" arguments	Argument improper but not so inflammatory that trial judge should have sua sponte intervened; no contemporaneous objection	Court held the remark improper but not prejudicial enough to reverse given evidence of guilt
Cumulative error from multiple improper remarks	Combined prosecutorial errors so prejudicial they warrant reversal	Cumulative errors did not create unjust prejudice affecting verdict due to overwhelming evidence	Court rejected cumulative-error claim; affirmed
Whether the knife was a "deadly weapon" under armed-robbery statute	State failed to prove the knife was a deadly weapon	Determination of "deadly weapon" is a question of fact for the jury; jury was properly instructed	Court held jury could find the 3-inch-blade pocket knife a deadly weapon under the circumstances; issue without merit

Caston v. State, 823 So. 2d 473 (Miss. 2002) (standard for assessing prosecutor argument prejudice)
Sheppard v. State, 777 So. 2d 659 (Miss. 2000) (prosecutorial argument review standard)
U.S. v. Young, 470 U.S. 1 (1985) (prosecutor may be vigorous but not "strike foul blows"; caution on jury-duty appeals)
Payton v. State, 785 So. 2d 267 (Miss. 1999) ("send-a-message" arguments can be reversible error)
Williams v. State, 134 So. 3d 732 (Miss. 2014) (whether an item is a "deadly weapon" is for the jury)
Dancer v. State, 721 So. 2d 583 (Miss. 1998) (test for whether prosecutorial argument requires reversal)