Hats off to Murray Brewster of Canadian Press for his chilling story on the Harper Government's determined campaign to prevent a Military Police Complaints Commission inquiry from getting to the bottom of allegations that Canadian troops in Afghanistan abetted torture. The commission is investigating complaints by Amnesty International and the B.C. Civil Liberties Association that Canadian troops knowingly handed over prisoners to torture in Afghan prisons. But federal lawyers invoked a little known national security clause in the Canada Evidence Act to bar a key government witness from testifying. Their fig leaf? They claimed Richard Colvin, who was political director at...