The nation's top anti-drug official said people need to overcome their "reefer blindness" and see that illicit marijuana gardens are a terrorist threat to the public's health and safety, as well as to the environment. John P. Walters, President Bush's drug czar, said the people who plant and tend the gardens are terrorists who wouldn't hesitate to help other terrorists get into the country with the aim of causing mass casualties. Walters made the comments at a Thursday press conference that provided an update on the "Operation Alesia" marijuana-eradication effort. "Don't buy drugs. They fund violence and terror," he said....