Русско-англо-русский юридический словарь

A key moment, he said, came during talks with a psychologist in Joyceville Penitentiary, where he learned the concept of "active remorse." The idea, he said, was that simply feeling guilty about past misdeeds does little to improve the world. More important is to try to make a positive difference. (cbc.ca)

A deed is an action, and a misdeed is a specific type of action. It’s one that's wicked, unethical, illegal, or just plain wrong. It’s the opposite of a good deed. Cheating on a test is a misdeed. So is cheating on your spouse. Stealing is a misdeed, as is any other crime. Politicians get caught in scandals when their misdeeds are discovered, such as lying or taking bribes. (Vocabulary.com)

offense: a breach of a moral or social code : SIN, MISDEED // was tolerant of his youthful offenses (Merriam-Webster Dictionary)