DEDHAM, Mass.—Former Roman Catholic Cardinal Theodore McCarrick pleaded not guilty on Friday to charges he molested a 16-year-old boy in 1974, a case that makes him the highest-ranking U.S. Catholic official to be prosecuted for sexually abusing a minor. McCarrick, 91, a former archbishop of Washington, wore a protective mask and hunched over a walker as he entered the courthouse in Dedham, Massachusetts, walking past TV cameras and a demonstrator yelling “shame on you.” He said nothing as the court entered a not guilty plea on his behalf to three counts of indecent assault and battery filed in July. Each charge carries up to five years in prison. Bail was set at $5,000, and McCarrick, who now lives in Dittmer, Missouri, was ordered not to contact his alleged victim or children. His lawyer declined to comment. McCarrick has said he had no recollection of committing child abuse. McCarrick is the …