Hat pins were at the center of a debate concerning women's right to exist in public spaces. This became known as the Hatpin Panic.
TIL during the early 1900s, hat pins were used by women for self-defense; Mademoiselle Gelas even wrote a manual advising a combination of jiu-jitsu, hatpin stabbing and umbrella work to fend off
Threatening Style: Clothing Laws and Enforcement from 1880-1930 – Femme Fashion Forward 1880-1930
Before Mace, a Hatpin Was an Unescorted Lady's Best Defense - Atlas Obscura
Seems like men have been living in fear since the 1900s : r/TrollXChromosomes
Hatpin Panic - 1900's Women Defending Against Men - Media Chomp
20th-Century Women Used Hatpins to Protect Themselves from Sexual Deviants and Men Tried to Ban Them, by Alisa Rusu
men Archives - Page 8 of 9 - Media Chomp
The Hatpin Peril Terrorized Men Who Couldn't Handle the 20th-Century Woman, History
Daggers in Their Hair: The Gilded Age Women Who Fought Off Gropers with Deadly Sharp Hatpins
The Hatpin Peril Terrorized Men Who Couldn't Handle the 20th-Century Woman, History
Have You Heard of the Hatpin Panic?, by Chelsea Rose, The Masterpiece