ROCKLAND, Maine — A former Rockland mayor was arrested on Tuesday for allegedly violating a protection from harassment order that a neighbor filed against him. The order barred Harold Perry, 57, of Rockland from having any contact with the woman next door, who claimed Perry called her disparaging names and on one occasion threw potato chips in her face, according to court documents. Perry was elected to the Rockland City Council in 2005 and was elected by the council in 2007 to serve as mayor.