OTTAWA-Canada's supreme court heard testimony Tuesday on a Sikh teenager who argued that fidelity to his religion would be broken if the government forces him to remove a ceremonial dagger concealed beneath his clothes at school. The case is being watched closely by some 300,000 Sikhs across Canada, some of whom have vowed to pull their children from public schools if the court rules against the boy. The Indian religion calls on its baptized males to wear the sheathed dagger as a symbol of power and truth, an object meant to cut through evil and deceit. Sikhs complain that...