In Bern there are three factions. One enjoys the new leadership, another doesn't mind whole fact who the appointed leader is but don't like the fact that Illa has the final word in what is said, and the last wants to break free from Illa and rid themselves of the scum named Sasuke as the leader.
The two that dislikes Illa's rule have combined to start a rebellion to free themselves from this tyranny. They started by attacking a few training sites for the new riders over night, they were armed with what ever they could find, pitch forks, shovels, even the lances they could steal during the attack. Now the thing most people in Bern wanted to avoid has come knocking in their front door by their own kind.
The leadership's first reaction was to quell the rebellion in the spots it has taken place. From there it was unclear what would happen.