Photo: Julieta Cervantes In John Proctor Is the Villain , Kimberly Belflower’s angry, funny, and excellent new play, both the surprise and the real potency of the title lie in how quickly its moment zips by — the speed with which the phrase bubbles up as an idea and, perhaps even more crucially, with which it’s dismissed. In an 11th-grade-English classroom in rural Georgia, seven students are reading The Crucible with their very cool teacher, Carter Smith (Gabriel Ebert, demonstrating his