People argued that public hangings should end for many reasons, and the 'hanging crowd' was a significant reason. People complained about rowdy crowds that showed up to watch hangings. When public hangings ended in England, the Times of London reported:
We shall not in the future have to read how, the night before the execution, thousands of the worst characters in England, abandoned women and brutal men, met beneath the gallows to pass the night in drinking in buffoonery, in ruffianly swagger and obscene jest.
Many polite Victorians felt that ending public hangings would advance civilization and they themselves felt uncomfortable watching hangings; at the same time they found the rowdy crowds' fascination with death, obscene language and gestures, and disrespect for authority embarrassing.
What I was most surprised to find that was by ending public hangings, the perpetuation of the death penalty was actually ensured. If people did not have to deal with the crowd, they would no longer have a reason to protest hangings. By making the hangings private, the death penalty could continue.