[More HeelFaceTurns than even Sasuke can keep track of himself, and even now he can't claim to be on anyone's side so much as his own, determined to prevent his own history from repeating on an endless loop. He'll die first, and he won't have left family behind to avenge him, but there will be others who perpetuate it.]

Konoha was built on alliance between the First's clan and Madara's. They'd spent generations killing each other, and then they expected harmony.

When they didn't get it, the Senju found ways to enforce it.