Anderson v. Nelson
In Anderson v. Nelson, 390 U.S. 523, 88 S.Ct. 1133, 20 L.Ed.2d 81 (1968), reh. denied, 391 U.S. 929, 88 S. Ct. 1812, 20 L.Ed.2d 670 (1968), the Supreme Court found a comment on a defendant's silence to be prejudicial where the comment was extensive, where an inference of guilt from silence was stressed to the jury as a basis for conviction, and where there was evidence that could have supported acquittal.
The comment of the prosecutor which the Court considered "extensive" ran for over two pages of the Supreme Court Reporter.