The NVA was established in 1885 and was a powerful group lobbying in support of legislation meant to protect women and children, often involving itself with prositution. They also decried literature and artistic works they deemed "pernicious" or in favor of "public immorality", including art exhibitions, anatomical waxworks, and literature including the publications of Vizetelly and Company like Gustave Flaubert and Émile Zola.

Sources: https://www.litencyc.com/php/stopics.php?rec=true&UID=5481

Censored: A Literary History of Subversion and Control by Katherine Inglis and Matthew Fellion