NEW YORK (AP) — Ministers are protesting New York Mayor Michael Bloomberg's decision not to include a clergy-led prayer in the city's ceremony marking the 10th anniversary of the Sept. 11 attacks.About 30 Protestant ministers and supporters knelt in front of ground zero Saturday and sang "Amazing Grace." Then they prayed for victims of the attacks.Police and National Guard troops carrying shotguns and combat rifles watched from a distance.The Rev. Rob Schenck notes that clergy members ministered to people in New York after the attacks. He says it was hurtful not to include religious leaders in Sunday's ceremony.Bloomberg has said he wants to keep the focus of the ceremony on victims' families. Organizers say the event will include spiritual readings and six minutes of silence for personal reflection or prayer.