In 2019, filmmaker James Rutenbeck set out to chronicle a renowned educational program among marginalized people in Boston. Instead, he came to grips with systemic racism and his own role in it. The riveting result, “A Reckoning in Boston,” will be shown at the Ocean County Library’s Tuckerton branch on Monday, Jan. 8 at 7 p.m.

The PG-13 documentary focuses on two life-hardened enrollees in the Clemente Course in Humanities, a nationwide, community-based deep dive into history, literature, art…