Sister Barbara Hansen is a Dominican nun in Grand Rapids, Michigan. She serves as a sister collaborator for the Nuns and Nones project, which brings together Catholic sisters and religiously unaffiliated millennials.

Katie Gordon is a member of the operational team for Nuns and Nones, an organization that brings together Catholic sisters and young people who don’t claim a religious identity. In the summer of 2019, Gordon lived in a Benedictine monastery in Michigan.

Colleen Dulle is associate editor at America Media. Dulle writes and edits Vatican news and analysis pieces, along with hosting and producing the weekly news podcast “Inside the Vatican.” She creates Vatican explainer videos for America Media’s YouTube channel and contributes to Sacred Heart University’s “Go, Rebuild My House” blog.

The Rev. Michael Pfleger is senior pastor for the Faith Community of St. Sabina in Chicago. He helps lead an annual march against gun violence.

Sister Valerie Heinonen is a Catholic nun who works as director of shareholder advocacy at Mercy Investment Services. She aims to use strategic investing to force change in the gun industry.

Anne Krisnik is the executive director of the Joint Religious Legislative Coalition, an interfaith organization in Minnesota that works to influence public policies, including gambling laws.

Archbishop Paul Gallagher is the Holy See’s secretary for relations with states. He oversees the Catholic Church’s relationships with government leaders. Arrange an interview with him through the Holy See Press Office.

Tina Ramirez is the founder and president of Hardwired Global, a nongovernmental organization that addresses interreligious tension across the globe.

Fred Whittaker teaches at St. Francis of Assisi Catholic School in Louisville, Ky. He advocated for state-mandated Holocaust education for more than a decade before legislators followed his advice and passed a new law in 2018.