"Some people take their domino toppling very seriously."
Dr. Sigmund Blur will explain this to you:
The sparrow was symbolic of the disenfranchised anarchists, the working class, rising up against the Have-Dominoes.
The elites in the building, the only ones in the story able to carry guns, defended the Bourgeoise status quo and violently put down the Worker's Revolution.
But the sparrows will storm the castle again.
Until then, though, "LET THEM EAT MILLET"
I would pay good money to see a sparrow cowering in the corner. Did he put his wings up over his eyes or what?