You’re gonna love Judges 19. Traveller man walks into a city, is greeted and taken in by a citizen, a gang of wicked men demand to have sex with the traveller, citizen offers his virgin daughter and traveller’s concubine to be raped instead, traveller gets mad that concubine died, goes home and cuts her in 12 pieces to call for revenge against the city (as it happens in Judges 20).

After that (Judges 21), they find out one of the tribes (cities) didn’t join in and decide they should die, too. All of this because “Israel had no King”