Harassment by younger brother and constant denial of financial rights

I have a brother 5 years younger to me. He has made my life hell. He is still a dependent and I earn to meet my expenses. But still, he instigates my parents to live separately. He picks up fight over smallest of matters and abuses verbally, on a occasion or two physically as well. I have tried to explain him things in different ways, including sharing reports on legal decisions and constitutional provisions for unmarried daughters. But he argues further and starts a fight. His sole aim is to ensure that all the resources by my parents should be utilised for his upliftment. My parents are not too supportive either. I want to know as an unmarried 28 years old, what rights do I have? Do I even have any or I should make a move to live separately?