Peterloo Massacre a meeting in Manchester on 2 August 1819. Johnson wrote: Unknown to Johnson and Hunt, the letter was intercepted by government spies and copied before being sent to its destination. The contents were interpreted to mean that an insurrection was being planned, and the government responded by ordering the 15th Hussars to Manchester. The mass public meeting planned for 2 August was delayed until 9 August. The "Manchester Observer" reported it was called "to take into consideration the most speedy and effectual mode of obtaining Radical reform in the Common House of Parliament" and "to consider the propriety of the
Peterloo Massacre and votes could only be cast at the county town of Lancaster, by a public spoken declaration at the hustings. Constituency boundaries were out of date, and the so-called rotten boroughs had a hugely disproportionate influence on the membership of the Parliament of the United Kingdom compared to the size of their populations: Old Sarum in Wiltshire, with one voter, elected two MPs, as did Dunwich in Suffolk, which by the early 19th century had almost completely disappeared into the sea. The major urban centres of Manchester, Salford, Bolton, Blackburn, Rochdale, Ashton-under-Lyne, Oldham and Stockport, with a combined population of