Traditionally executions had been public to act as a deterrent.
However, increasingly executions carried a carnival atmosphere, with some employers allowing workers time off to attend.
The authorities became concerned that the crowds were often drunk and disorderly, and that the large crowds created opportunity for further crime like pickpocketing and prostitution.
Some reformers also argued that those condemned to death should be allowed more dignity. This was part of a school of thought called humanitarianism.