A man and his wife get into an argument no violence shown.
A man - father of two and stepfather of two - is an abusive alcoholic. In one scene, his wife is on the ground, crying, and it is implied that he hit her.
Later, the same man drinks at the dinner table and throws dishes at his son and stepson, both preteens.
At the dinner table, you can see bruising on the mother's face.
The wife later claims he smashed her head into a wall.
The stepfather lines the kids up to ask them if they heard form the mother. There is an implied threat but he doesn't actually become violent. (It was tense).
The mother comes back home, to take her kids away with her. The father goes to block them from leaving. The mother is screaming at him and at her kids to come with her.