This course focuses on urban or collective violence, or what more colloquially tend to be referred to as 'riots'. The course will consider the various approaches that have been taken to this subject - via history, psychology and sociology - and, focusing on particular examples, the course will examine some of the core issues in the field including: the causes of riots; psychological versus sociological explanations; the role of race/ethnicity; the impact of traditional and new social media on the nature and organisation of rioting; the role and changing nature of the policing of urban disorder;  and how riots might be understood both historically and comparatively.