Peterloo Massacre memorial because it under reported the incident as a dispersal, and the deaths were omitted completely. In a 2006 survey conducted by "The Guardian", Peterloo came second to St. Mary's Church, Putney, the venue for the Putney Debates, as the event from radical British history that most deserved a proper monument. A Peterloo Massacre Memorial Campaign was set up to lobby for a more appropriate monument to an event that has been described as Manchester's Tiananmen Square. In 2007, Manchester City Council replaced the original blue plaque with a red one, giving a fuller account of the events of 1819.
Brigham Young and the Mountain Meadows massacre rider delivered Young's letter to Haight, the massacre at Mountain Meadows had already taken place. According to trial testimony given later by Haslam, when Haight read Young's words, he sobbed like a child and could manage only the words, "Too late, too late." Historians debate whether the letter contained any other instructions. Brooks believes that the letter demonstrates that Young "did not order the massacre, and would have prevented it if he could." Brooks writes, "While Brigham Young and other church authorities did not specifically order the massacre, they did preach sermons and set up social conditions that made it