People who’ve never met Sharif el-Gamal hate his guts. He receives threatening, hysterical phone messages. Protesters angrily confront him on his way to work. And why? He’s just trying to build a community center. Of course, there’s the matter of what kind (an Islamic center) and its location (two blocks from where the World Trade Center towers once stood). Dubbed the “Ground Zero mosque” by the media and far nastier names by its opponents, Park51 makes el-Gamal the target of widespread suspicion and conservative wrath. As he struggles to keep his fledgling organization alive, el-Gamal finds his past scrutinized and his relationships—both familial and collegial—strained. With the feel of a Maysles Brothers classic updated for the twenty-first century, Building Babel demonstrates how our best intentions can bring terrible consequences, and offers a glimpse of the small victories that come with weathering them. Plays with “Paraíso” (dir. Nadav Kurtz, 10) (KP)