This document discusses issues and challenges in policing, covering topics like police subculture, corruption, dangers faced by police, post-9/11 policing changes, civil liability, racial profiling, use of force, and promoting professionalism. It provides learning objectives for each section and describes key points, such as how the police subculture is shaped more by informal socialization than training, types of police corruption, physical and mental hazards of police work, the expanded counterterrorism role of police after 9/11, common sources of civil suits against police, efforts to address racial profiling, guidelines for use of force, and the importance of education and ethics in professional policing.