How have the courts treated allegations of prosecutorial misconduct in closing arguments?

Defendant next contends that the prosecutor engaged in misconduct during closing argument that violated his constitutional rights to due process. Federal due process is violated when a prosecutor engages in misconduct that "infects the trial with such unfairness as to render the subsequent conviction a denial of due process." (People v. Maciel (2013) 57 Cal.4th 482, 541.) State due process is violated if the prosecutor employs "deceptive or reprehensible methods . . . to persuade the trier of fact." (Ibid.) Defendant alleges three instances of prosecutorial misconduct.