Do you actually think that unisex bathrooms will increase the prevalence of child molestation or sexual assault? Any data to back it up? Europeans have more unisex bathrooms. Has a higher incidence of assault been documented in these co-ed bathrooms? Let's get specific, what are you envisioning here?  A male high school student pretends to be transgender and uses the girls bathroom, then attacks a girl in said bathroom, because you know, something about bathrooms just drives guys crazy. Your argument just seems like a convenient cover for the true motivation of your opposition.