I live opposite a sort of hostel for formerly homeless people, with support services to get the residents on to independent living. You generally wouldn't know it was there, most people are just living their lives, and it's clearly a very worthwhile service.
Anyway - I'd left a parcel outside my door this morning, with a sign under the doorbell for the courier in case I was out. I wasn't out, and a few minutes ago found one of the hostel residents trying to nick it. Quite comically, because he's about a hundred years old and walks with a crutch, and the parcel was a Barbie house the size of Wales. I shouted at him to get out, he left... do I leave it or do I write to the charity running the hostel?