People would say that the man that gets angry with his children is the offender and that he is the one that binds paap, but God does not say that. God would say that he is the offender if as a father he fails to get angry with his child. Is it good to get angry? No, but it was necessary at the time because if he did not, his son would have strayed in the wrong direction. Consequently, anger is a red signal, nothing else. If the father had not appeared intimidating and had not become angry, he would have lost his son to the path of vice.
People have no idea that anger is a red flag. It is important for one to understand when and for how long this flag has to be utilized.