Philadelphia public schools chief Paul Vallas and City Police Commissioner Sylvester Johnson yesterday apologized for the decision that led to a 10-year-old girl who was caught with scissors in her book bag being handcuffed and taken to the local precinct in the back of a police wagon. "I'm not going to demonize a fourth grader who brings a scissors to school," Vallas said in a phone interview shortly after calling the child's mother, Rose Jackson, to apologize. "For heaven's sake, you don't need to call in the police on a case like that. I just think that's an overreaction." Johnson,...