Quote from : The Hobbit: The Desolation of Smaug Movie

Smaug: You think you can deceive me, Barrel-Rider? You have come from Lake Town! This is some sort of scheme hatched between these filthy dwarves and those miserable tub-trading Lakemen, those snivelling cowards with their Longbows and Black Arrows! Perhaps it is time I paid them a visit!
Bilbo Baggins: Oh, no... This isn't their fault! Wait! You can not go to Lake Town!
Smaug: You care about them, do you? Good! Then you can watch them DIE!