Philly Roller Derby skaters, who go by names like Wooly Slammoth, TrailBlazeHer and Reba Smackentire, have jammed and blocked their way around oval skating rinks in the spirit of feminism, anti-racism ...

Since 2004, Bay Area Derby has presented full-contact, flat-track women’s roller derby as it’s meant to be exhibited: fast ...

but without the tights and pads worn during the event. The inclusion of women also signaled to some that roller derby was not a legitimate sport – something that haunts it to this day.