I'll be honest, I didn't particularly like this short story. It is full of symbolisms and meant to parallel real life in a particular way, the wings representing people's freedom, the horn symbolizing power and the voice signifying the possibility to publicly announce your thoughts. But I don't need ponies as a metaphor of life, and although it was well-written, it was very expectable as to what its meaning was supposed to be.
Ponies: A Tor.Com Originalvon Kij JohnsonTor Books