“The Light” is an urgent and painful story of revelation, redress, and hopeful reconciliation cued at the intersection of #MeToo and Black Lives Matter.  Tautly and evocatively sketched by playwright Loy A. Webb, this exquisite two-hander starts like a rom-com before embarking on tragic territory, forcing the audience to reckon with its own baked-in biases and assumptions based on race and gender, and to do and be better.