Toughen up with Boston Massacre Roller Derby

Baby Fighterfly a.k.a. Cate Morin of Boston Massacre Roller Derby waits on the sidelines before the start of another bout.
Baby Fighterfly a.k.a. Cate Morin of Boston Massacre Roller Derby waits on the sidelines before the start of another bout.
(Yoon S. Byun/Globe Staff)