If you’re an American adult who regularly rides a bicycle, you might feel a tiny sense of moral superiority about getting exercise and reducing your carbon footprint. But in the 1890s, the moral discourse around bike riding was very different, and much more fraught.
Up until the invention of the modern “safety” bicycle in 1887, few women rode the high wheel bicycles of the previous generation. But in the 1890s, a “cycling craze” offered a new kind of mobility to many young women.
Bikes facilitated unchaperoned dates—even elopements. Just as troubling to some moralists of the day, cycling women often wore bloomers, widely seen as indecent, that were much like men’s pants. The Women’s Rescue League of Boston even claimed that, following the closing of brothels, prostitutes were riding bikes to reach their clients.
https://daily.jstor.org/the-moral-threat-of-bicycles-in-the-1890s/