Roller derby was already queer-friendly. Then it got more inclusive.

This story was originally reported by Kate Sosin of The 19th. Meet Kate and read more of their reporting on gender, politics and policy.

For Juniper Simonis, that night in 2012 replays like the start of a favorite movie. It’s a warm summer evening, and she’s speeding through Ithaca, New York, on her bike. The wind is in her hair — at lea...