California, United States of America
The following excerpt is from People v. Cardoso, F069505 (Cal. App. 2016):
Defendants contend the cumulative effect of the prosecutor's repeated acts of misconduct during closing argument deprived them of their right to a fair trial. It is true the cumulative effect of prosecutorial misconduct can so prejudice a defendant that reversal is required, even though each instance by itself may not be prejudicial. (See People v. Hill, supra, 17 Cal.4th at pp. 844-845.) We cannot consider the cumulative effect of errors when none were preserved for appeal, however.
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