My dad is 92 and does not need this grief. He is taking advantage of situation. He has lost his job, don't believe he has filed for social sec. I feel he has a mental problem. You cannot speak or reason with him, he turns away and mumbles. He is always angry. My mom was the one who always took care of him, cooked, cleaned, laundry, etc. she died in 2008. I know this is not a good situation and can escalate. My dad said they got in an argument yesterday and my brother was saying hiel hitler. He has lived at home his whole life, except for 1 year rent free. What is the best way to approach this?