Sister Simone Campbell, the executive director of NETWORK, a Catholic social justice lobby, explains how the “Nuns on the Bus” tour kept snowballing into more tours, even after its initial high-profile trip. “We came back on July 2 from our 15-day tour after 2,700 miles and we thought it was over,” Campbell said. “What happened almost immediately was people were saying ‘We need to do it here.’” She says that NETWORK has five rules if you want to launch a tour: You need at least one nun, you speak civilly, you don’t campaign for or against a specific person, you lift up the needs of poverty, and you stay in touch with the campaign.

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