PETER HITCHENS: Read Grace’s story, then tell me you still think marijuana isn’t destroying our country You probably shuddered when you read about the terrible thing which happened to a young trainee doctor, Grace Spence Green. Her body was smashed when a man jumped off a 120ft-high shopping centre and landed on her. But did you wonder why it even happened? Marijuana was why it happened. When will we ever learn just how much damage the unrestrained use of marijuana is doing to our society?