First in my opinion this things have two or three different type of problem and all three way , they have to be solved , no one way is proper or may give results.
1) Psychiatirc internvention --- See when grown up boys shows aggressiveness , it is sign they are not totally mentally fit and thus require some internvention to understand psychology and if their are any signs of some evolving mind disease. Such cases are taken by Psychiatric as behaviour problem of boys etc. and to large extent it is common but such things Psychiatric related matters are dealt with utter secrecy in our society so you never find anyone openely telling that for their loved once or close family members in their aggressive state or behaviour issue they consulted and stick to Psychiatric for few months or years as case may be in longer interest. This I recomend also that the way we handle baby and it do many things , but we love them , and they understand them they do because they are helpless or need care. Similarly regarding loved relationship and such mattters I feel first option should be taking help of Psychiatric to intervene and take care and understand behaviour disorder of Boys (Who are certainly your close relaives)
2) Legal angle to such case will be under provision of two acts
1) Maintaince and welfare of Parents and Senior Citizen Act 2007
2) Protection of women from domestic violence Act 2005
These are two laws which can be useful but see I will be honest if you take of this law there are chances case can get spoiled further First option will be good one.
3) If Deepika can go public with her Depression so I should also try , to show some courage without going too personal
1) My Parents where in teaching line , Father Principal of Colelge , Mother Teacher , I was aggressive some time losing anger I too you use to hit parents , My Father who was Principal of College who asked family Dr. what can be done. He said refer to Psychiatric , Psychiatic gave me some medicine to help anger control . Psychological questionaiers where given when I was co-operative , He waitied till I become coperative till 6 - 7 months, Psychological report stated , Anger mangement , Rx for Anxiety and Depression. Coping up ability.
2) Within few months or year I became cool minded person , use to concentrate on studies and again less anxiety and stress giving good results . I was studying and back on track .
3) If Father had taken legal course then surely , 10 pass constables or less educated police men would have spoiled the case further without any good consequence
4) My father who was Principal told me once , in his life time I was not first to hit him. Even some students have also hit him or slapped him and they are respected people of society. getting awards from President of India for contribution to their resepctive field now . My father said as teacher I decided to show maturity keep silent and take necessary propert steps to put all in proper way without complaining or making noice . So teachers /Prof /etc too have to handle aggressive students and put in proper direction and not just fight with them else , Only drama takes place for world noting else. Sorry Name of students can be revelead because names are too big to be written in public forum. And violation of trust between teachers and student relationship.
5) Additionally I have seen personally seen personally divorce couple children have some kind of anger against one of their parents or they feel some one is responsible for their problem and they express anger to them . Some time they try to fight with friends who have good parents or patrents who are not divorced. So in this case I strongly suspect boys are removing some kind of anger on you , which require attenion of Proffessional Psychiartic or with his co-ordination Psychologist who can assess the boys and situation.
6) I was looking at my school website few days back they have introduced Child Psychologist to help childrent, Whether Young children are mentally sick ? No they are not , but they require some kind of help to cope up when situation is not favourable to them including parents divorce , either of parents death , sickness , failure , peer pressure , or some other kind of problem.
7) One Old person said when I was born I was born in house , my birth was done by aiya or some local lady. Now Gynecologist are there I prefer to send my daughter to Gynecologist after pregrancy they are more proffessioanl and scientific I won't prefer less educated Aiya and risk my daughter and new born baby life. Similary take help of modern medical scienence and new subjects
Sorry too young to give advice , but this is what my father who was Principal and mother teacher did when I was aggressive and use to hammer or hit in house . I only say I was immatured that time my parents where indeed competent and I was lucky before case deterorate further .