Surprise: There are zero reported cases of this happening. Several states, including Arizona, Florida, Texas and Kentucky, have considered or are considering enacting so-called "bathroom bills," which restrict transgender people from using the bathroom in line with their gender identity, and are framed as "protective" measures against "sexual predators." But these bills are not protective. They're vehicles for instilling fear of trans and gender-nonconforming people. For example, Florida State Representative Frank Artiles (R), who sponsored the Single Sex Public Facilities bill (HB 583), did not provide any evidence that a trans person has ever attacked cisgender (non-transgender) people in public restrooms when pressed by BuzzFeed in February. On his blog, Artiles wrote that this bill is a "preventative" measure and was not spurred by a specific incident.
Big fat zero: Spokespeople from the Transgender Law Center, the Human Rights Campaign and the American Civil Liberties Union told Mic that no statistical evidence of violence exists to warrant this legislation. Vincent Villano, the director of communications for the National Center for Transgender Equality, told Mic in an email that there isn't any firm data to corroborate these lawmakers' claims, and that NCTE has "not heard of a single instance of a transgender person harassing a non-transgender person in a public restroom. Those who claim otherwise have no evidence that this is true and use this notion to prey on the public's stereotypes and fears about transgender people."
The Advocate noted the same glaring fact last month regarding Texas' bathroom legislation: "There has never been a verifiable reported instance of a trans person harassing a cisgender person, nor have there been any confirmed reports of male predators 'pretending' to be transgender to gain access to women's spaces and commit crimes against them."
Alachua County Crisis Center victims advocate Ashley Flattery told the Miami Herald, "This kind of idea that somebody is going to be assaulted in the bathroom by someone, and claim they have the right to be there because they are trans, is imaginary."
@jays_slayer None of these instances actually involve transgender people. You've instead proved that the cis population has been the only ones at fault. These individuals are not representative of the actual transgender population.