This guide is based on the experiences gathered in public and academic libraries regarding conflict and danger situations. It focuses on prevention and explores possible solutions. The author addresses typical library-related issues and provides valuable advice on dealing with aggressive users, challenging youth groups, as well as users with addiction problems or mental health issues. The book also discusses various types of offenses such as theft, property damage, and insults. The author offers communication techniques and phrasing aids, along with practical tips for self-protection in the event of physical attacks. This third revised and expanded edition includes six new chapters, three of which are guest contributions. "A book of general significance." Uwe Füllgrabe, Kriminalistik6 (2007).