Clergy gathered outside Delaney Hall not just in prayer, but to demand that officials release the names of the people being held inside the building.

Delaney Hall, a privately operated detention center in Newark, drew national attention on Friday as Mayor Ras Baraka, a Democratic candidate for New Jersey governor, was arrested outside the facility by federal immigration agents.

Linda Baraka, the mayor’s wife, accused the federal government of targeting her husband, who has aggressively pushed back against the construction and