The newest batch of reader letters covers history, bullying, and credibility, three subjects its contributors approach from different angles. The letters on history use the past as a measuring stick for the present. On bullying, contributors press schools and adults to confront the practice rather than dismiss it as childhood roughhousing. A third cluster takes up credibility, asking which voices deserve trust and what happens when institutions lose theirs. Selections like these often reveal more about a publication's audience than its editorials do. The common thread is a demand for accountability, from officeholders and from anyone whose word carries weight.