So pissed dont know who to vent to how can you call your self a man and beat up your disabled…

So pissed dont know who to vent to how can you call your self a man and beat up your disabled father. My dad called me this afternoon after my brother beat him up and thew a glass bottle at my dad and it hit him in the neck. Mind you my dad is disabled and has a bad neck and bad back that is why he can't work. My Dad was in tires he was in so much pain from my brother doing this to him. I am so pissed I want to yell and scream at my brother. Going tomorrow to see my dad and see how he is. I am so worried about my dad.