Amid the chaos of our great political and cultural divides, there is still one event that manages to unite people with the Ambien of sweet nostalgia, the calming embrace of family heritage and the quiet hope of undiscovered treasure: PBS's Antiques Roadshow, an American fixture since 1997. Sometimes it takes a village " in this case, Old Sturbridge Village in Sturbridge, Mass., just over the Connecticut border " to b…
