According to the Williams Institute at UCLA School of Law:
Conducted in Massachusetts, this study assesses the validity of claims that gender-identity protections lead to privacy and safety violations in restrooms
A new study by the Williams Institute at UCLA School of Law finds that Massachusetts’ public accommodations nondiscrimination laws that include gender identity do not affect the number or frequency of criminal incidents in restrooms, locker rooms or changing rooms. In addition, reports of privacy and safety violations in these places are exceedingly rare.
Researchers used criminal report data from several Massachusetts localities to assess differences in the rates of crime in areas with and without public accommodation laws that included gender identity protections. Results showed that immediately after the laws’ passage, there were fewer incidents of privacy and safety violations in places with gender-identity inclusive public accommodations laws than in comparable areas without the laws.