:::The logic that you are appying in this edit summary is original research. Like it or not, the weight of reliable sources do not use the negative terms that you are trying to add to the article. The lead paragraph now reads "In 1978, he was arrested in Los Angeles and pleaded guilty to "unlawful sexual intercourse with a minor", a 13-year-old girl." This conveys the facts in a neutral way that serves as a summary of the events written in the article. Gwen is correct that describing the charges and conviction themselves are more than enough.