Alcohol Abuse and Addicti. Please help!

Dear Doctors, My parents are suffering from alcohol addiction and alcohol abuse. I am sure this is how it has been for the last 25 years or more, considering I'm 25. Everytime my parents consume alcohol, I feel they are more open to disclose a bothering problem about each other (even something small and ridiculous to fight over) and fighting like dogs. There has been cases where the neighbour had to come down due to the extreme noise created. As a child, I have always hated them for this. But with age, I have tried explaining to them how it affects us and the family and how they should stop drinking. But they only take it personally and say I am not perfect either and I do not have the right to preach them. Today I have reached a point where I do not want to live with them, just to escape this drama everyday and night. But my brother has to live through this everyday. I know my parents need professional help to come out of the addiction. But I do not know where to start. Please help