They demonstrated outside church offices Wednesday.
The case involves Father George Klein, who is accused of abusing a 15-year-old girl in the 1970s. SNAP says it happened when he was the principal at St. Benedict's High School on Chicago's North Side.
SNAP says Klein is currently at St. Philip the Apostle.
The archdiocese has put Klein on restrictions. It says he is retired, and not in active ministry, and that the case is being investigated.