When the idea for her new book first came to her, Kerry Kennedy was coping with a sentiment that may be familiar to many American Catholics: frustration. With the clergy embroiled in a sex abuse scandal, and the church leadership still unyielding on issues such as abortion rights, Kennedy admits feeling anger toward the church whose traditions and social justice teachings she had long revered. The result is “Being Catholic Now,” a series of interviews with prominent American Catholics that seeks to delve deep into the heart of the faith by asking the simplest of questions: What does it mean to be Catholic?