There’s a hold-your-breath inevitability to what is finally disclosed in “Building the Wall,” the powerful dystopian drama about life in the Donald Trump era by Robert Schenkkan. You hear it in the distant, unnerving soundscape. You see it as two characters increasingly come to grips with their worst fears. Most of all, you feel it in the gut, because what the writer imagines is not so much a fanciful futurist leap but a calculated cautionary tale, taking place just two years from now. To read more, click here.