With Netflix’s ‘Roxanne Roxanne,’ the story of hip-hop pioneer Roxanne Shanté is finally told

The first time you press play on Roxanne Shanté’s visionary hip-hop single “Roxanne’s Revenge,” you’re hearing it just as the artist did: with no idea about what’s coming next.

Shanté was just 14 when she cut the freestyled tune in a single take between loads of laundry, true to the fraught, freewheeling…