Question

your friend's father drinks a lot of alcohol and beats your friend under its influence.

Answer 1

being her friend we shouldn't support her father...
it's a kind of domestic violence
we should oppose it and should complain about it

Answer 2

We should definitely stand by our friend and try to stop the issue. Drinking alcohol and beating someone up is physical as well as domestic abuse.

We should seek help from the elders to deal with the situation.

We should try to take the father of our friend to a counselor so that he gives up drinking alcohol and come back to his normal life.