The veneer of civilization is thinner than one hopes for in Yasmina Reza’s 2009 Tony-winning black comedy God of Carnage, admirably revived by Theater Breaking Through Barriers. The set-up is simple. Two couples are meeting after Benjamin, the 11-year-old son of one couple, hit Henry, the son of the other, with a stick and damaged two teeth. Henry’s parents, Michael and Veronica Novak (Dave Fazio and Christiane Noll), pressured him to reveal Benjamin’s name, and they have invited Benjamin’s parents, Annette and Alan Raleigh (Corey Cox and David Burtka) to their well-appointed home to exchange “statements” about the incident.