I never realised that Murray came from Dunblane or, what's worse, that he was hiding under a school desk. So, all the luck and best to him. Hope he does it.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .