A public school teacher was arrested today at John F. Kennedy International airport as he attempted to board a flight while in possession of a ruler, a protractor, a compass, a ancient wooden device called a "slide-rule" and a calculator. At a morning press conference, Attorney General Eric Holder said he believes the man is a member of the notorious Al-Gebra movement. He did not identify the man, who has been charged by the FBI with carrying weapons of math instruction. "Al-Gebra is a problem for us," the Attorney General said. "Al-Gebra has terrorized many young people for years. They...