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 horrified by the carnage. One of the casualties, Oldham cloth-worker and ex-soldier John Lees, who died from his wounds on 9 September, had been present at the Battle of Waterloo. Shortly before his death he said to a friend that he had never been in such danger as at Peterloo: "At Waterloo there was man to man but there it was downright murder." When news of the massacre began to spread, the population of Manchester and surrounding districts was horrified and outraged. After the events at Peterloo, many commemorative items such as plates, jugs, handkerchiefs and medals were produced; they