The historical purposes of sex-separated toilets in the United States and Europe, as well as the timing of their appearance, are disputed amongst scholars. Safety from sexual harassment and privacy were likely two main goals of sex-separation of public toilets, and factors such as morality also played roles. Paternalism and resistance to women entering the workplace might have also played a role. Some women's groups are worried that unisex public toilets will be less safe for women than public toilets that are separated by sex. Transgender activists have long been pushing for gender neutral bathrooms in order to provide safe spaces for those outside the gender binary.