Idea

Riku Pyhälä gave me the idea.

Griffin walks through the streets carrying a letter, and sees computerscreens with flashing advertisements (in the shops), he enters the post office where on a few computerscreens the anti-virus says that the computer is infected by a virus, before the screen shuts down. Giffin smirks a little when he sees the computer technicians stand clueless and helpless.
He gets pulled back to the reality when the man/woman behind the desk yelles next.
As he leaves the post office he sees the same computerscreens in the computer shops crashing one after the other)
A moment later he enters the library and gets a book. When he get's to the librarian the computer crashes and the librarian runs away (cursing perhaps?) Griffin smiles when he sees that the security camera crashes puts the book in his pocket, says thanks 'gov' and leaves
thanks 'gov' can refer to thanks government and to the more obvious one: he thanks the librarian for the (free) book