Punctuation Hero or Vandal?

‘Punctuation hero’ branded a vandal for painting apostrophes on street signs:

After enduring sloppy punctuation on the street sign outside his home for more than a year, Stefan Gatward could stand it no longer.

The 62-year-old former soldier decided to launch a one-man crusade against 'dumbed down' Britain, and picked up a paintbrush to insert a missing apostrophe.

This turned the incorrect St Johns Close into the correct St John's Close.