Bismihi ta'ala

The topic of domestic violence is always an upsetting topic for anyone to discuss, because of the detrimental damages it has on everyone involved in it. It is natural for someone to get angry, or sometimes even furious, but for them to take it further and incur injury on someone else, that is unaccepted. Look at how much our religion tells us about suppressing our anger, and learning tactics on how to cool ourselves down, and to never ever transgress the rights of others.

Also, this injury doesn't necessarily need to be physical, it could also be mental and emotional. At times the effects and damages of emotional abuse lasts longer than physical. 

It makes it even worse when unfortunately we see some so-called "religious" people who's private life is completely different to their public life. In public, they are kind and friendly, but at home, in their private life, they are tyrannical, oppressive and violent. 

Dhulm, or oppression is one of the worst of sins, and indeed there is a harsh punishment waiting for that person who treats others unfairly and wrongs them in any way. 

As for you, the son/daughter, who is living in this situation. You really need to evaluate the situation and see to what extent is this happening, and how you are able to safeguard yourself. Have you tried to speak to relatives, or close family friends about this? Have you contacted a professional family counselor, preferably Muslim so they know your culture and how to deal with it. In serious cases, have you involved the police? 

Your parents are clearly going through a crisis through their lovelessness, and they are dragging you along with them. It could be that their emotional instability and fracturing of their relationship is taking a toll on those around them, and that is unfair. 

Pray for them, and whatever they do, still do dua for them, but dont let these things continue. This is an ibtilaa' Allah ta'ala has placed you in, so you need to stay strong to overcome it. 

Of course, only you can evaluate the situation, and see how to deal with these circumstances, but one important thing is if this is a reoccurring scenario, then you must protect yourself, and somehow make it stop. Whatever you are doing, it never justifies abuse, and therefore always remember that you should never blame yourself as well. 

I would strongly recommend you reaching out to someone in person, and seek intervention, and always stay strong, in shaa Allah.

With prayers for your success.