Riot Act felt uncertain of their power to take action to stop the riots without a reading of the Riot Act. After the riots, Lord Mansfield observed that the Riot Act did not take away the pre-existing power of the authorities to use force to stop a violent riot; it only created the additional offence of failing to disperse after a reading of the Riot Act. The Riot Act was read prior to the Peterloo Massacre of 1819, as well as prior to the Bristol Riots at Queen's Square in 1831. Both are held to be related to the Unreformed House of
Peterloo Massacre place to meet, from where its members were to proceed to assembly points in the larger towns or townships, and from there on to Manchester. Contingents were sent from all around the region, the largest and "best dressed" of which was a group of 10,000 who had travelled from Oldham Green, comprising people from Oldham, Royton (which included a sizeable female section), Crompton, Lees, Saddleworth and Mossley. Other sizeable contingents marched from Middleton and Rochdale (6,000 strong) and Stockport (1,500–5,000 strong). Reports of the size of the crowd at the meeting vary substantially. Contemporaries estimated it from 30,000 to as