My Little Pony: Friendship is Magic - Dirt Republic

However, all the bits they had gathered eventually attracted the attention of a mighty dragon, who then drove the earth ponies out of the Dirt Republic. As they ran, they saw Rainbow Dash and her pegasis watching from over the mountain. Applejack and the others screamed for pegassistance. However, Rainbow Dash would not risk the lives of her kin against the wrath of the dragon. No help came from the Pegasis that day, or any day since.

1 month later, the seccesionist Dirt republic was quickly and systematically put down for their treason, the rebels were either slaughtered or brought back to the light of the empress of ponikind, thanks to the invincible might of the imperium's armies