The Doctor (who had a different name, a secret name Rose couldn't know, not yet) watched the captured alien come to life in the little underground cell in Nevada and he gave it back its true name.
Dalek.
Everything he had done; the entire Time War, destruction of his planet and his poor war-twisted race and for what?
A live Dalek. They had survived.
He was shouting at it, hoping to torment it as much as its very existence tormented him. Fat chance of that.