The Supreme Court says prosecutors can use a person’s silence against them if it comes before he's told of his right to remain silent. The 5-4 ruling comes in the case of Genovevo Salinas, who was convicted of a 1992 murder. During police questioning, and before he was arrested or read his Miranda rights, Salinas answered some questions but did not answer when asked if a shotgun he had access to would match up with the murder weapon. Prosecutors in Texas used his silence on that question in convicting him of murder, saying it helped demonstrate his guilt. Salinas appealed,...