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
Waterloo Bay massacre died of wounds from the clash, and five were captured, although accounts of the killing of up to 260 Aboriginal people at the cliffs have persistently circulated since at least 1880. In the 1920s and 1930s, several historians examined the archival record and concluded that there is no formal or direct evidence of a massacre on a large scale, and opined that the recorded events were exaggerated by storytellers over time. More recently, another historian concluded that the rumours relating to a massacre are founded in fact, and that some form of punitive action did take place on the cliffs