Policing in the US and elsewhere is facing new and complex challenges around issues such as community trust, leadership, and recruitment and retention; Policing Insight’s Christine Townsend spoke to former police chief Kathleen O’Toole and policing consultant Bob Peirce about their new book, which draws in part on their experiences of working on Northern Ireland’s Patten Commission to suggest solutions for the crises facing policing in today’s divided communities.