Marotta v. United States

in the absence of a contemporaneous objection an improper jury instruction will rarely justify reversal of a criminal conviction | in the absence of a contemporaneous objection an improper jury instruction will rarely justify reversal of a criminal conviction | In the absence of a contemporaneous objection “an improper jury instruction will rarely justify reversal of a criminal conviction.” | "Here, the testimony ... made out a prima facie case connecting the exhibit to the defendant; the evidence was thus properly submitted to the jury for a determination on its authenticity.”