Pat Fitzgerald, 67, has long loved being a Catholic, and the part he loved maybe most of all, for the past quarter-century, was his role as a spiritual mentor at retreats for students at a church-affiliated high school in Indianapolis, where he lives.

But he has been told that he’s not wanted anymore. His crime? He publicly supported his daughter, a guidance counselor at the school, after its administrators moved to get rid of her because she’s married to a woman.

Pat Fitzgerald, uncomfortable with media attention, declined to speak with me, preferring to let his daughter do the talking. “His struggle comes from caring about Roncalli and being in conflict with what they’ve done to me,” Shelly told me. In October he attended a protest against the church’s treatment of L.G.B.T. people. His sign said, “Please treat my daughter Shelly kindly.”