The subsequent growth of Manchester into a major industrial city left its lack of representation a major anomaly , and demands for a seat in Parliament led to a mass public meeting in August 1819 . This peaceful rally of 60,000 pro-democracy reformers , men , women and children , was attacked by armed cavalry resulting in 15 deaths and over 600 injuries , and became known as the Peterloo Massacre
Peterloo Massacre
Peterloo Massacre
Manchester (UK Parliament constituency)