Only moments into Downtown Race Riot, playwright Seth Zvi Rosenfeld skillfully plunges the audience into a milieu that Republicans in the current political landscape fulminate over. An indigent mother (Chloë Sevigny), advises her son Pnut (pronounced peanut) that she has a foolproof plan to earn money, but she will need his help when her lawyer comes by shortly. “Listen to me,” she says, “I’m gonna bring up your asthma so have your inhaler ready and if you have to fake a cough, be prepared…. And you may have to act mildly retarded.” With a sluggish indifference, unless she’s animated by a new scam, Sevigny expertly inhabits her character, Mary, with her semi-glassy eyes (she’s a recovering addict, and not too far on the road to recovery to turn back decisively) and a confidence in her own craftiness.