(West Union, Ohio-AP) -- Dozens of protesters locked arms and knelt in prayer Monday to hinder workers who had been ordered to remove giant Ten Commandments tablets from four Ohio schools. Several hundred people turned out to protest a federal judge's order to remove the commandments. Some initially blocked a crane from taking the 800-pound granite tablets. Deputies briefly took at least 30 protesters into custody, but later released them without filing charges. The Adams County school district is challenging the ruling that the displays violated the separation of church and state. That ruling last year followed a suit filed by the American Civil Liberties Union on behalf of a resident. The judge ordered the displays removed Monday, after the school year was finished.