A 100% true story that happened on a Busan subway

I was riding the subway when a man suddenly said this to me... (He might have been an ex-police officer.)
"That family's daughter caused trouble, then the younger sibling died, and the whole family ended up dead."
What this means is that the daughter caused trouble because she hated her father, who was a policeman, but instead of reflecting on his actions, the father only wanted to seek revenge because of her. As a result, he was even divorced by his wife and eventually lost his job; even while working manual labor, he still tried to seek revenge. Now that he has become a beggar, he is going all in.