Bob Dent searches for some missing history. When I first came to Budapest in the 1980s there was a memorial plaque on the façade of the M?csarnok or Hall of Arts in Heroes’ Square. The plaque commemorated a massive workers’ demonstration of 1 September 1930. The marchers had passed through Heroes’ Square on their way to City Park. In recent years it has struck me that the plaque is no longer there.