 The Free Trade Hall , home of the Anti @-@ Corn Law League , was built partly as a " cenotaph raised on the shades of the victims " of Peterloo . Until 2007 the massacre was commemorated by a blue plaque on the wall of the present building , the third to occupy the site , now the Radisson Hotel . It was regarded as a less than appropriate 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 . 
