What should I do?

Ok here goes…I’m a teen from Mississippi in a pinch.For as long as I can remember my parents marriage has been dysfunctional.There has been verbal abuse on both sides but that’s not what I want to talk about.Before I get into that I’ll give you some background.My dad is the deacon of a pentecostal church.What does that have to do with anything?Well he grew up in a secukar environment with a borderline abusive father.He also grew up in a rough area so he turned to religion as a coping mechanism.These factors gave him anger issues(This will become important later)Well recently in the past few years, he’s become more… fanatical in his beliefs to say the least.His views on women,gays,blacks,whites, and even children can range from dismissive to downright bigoted.Oh and don’t DARE question his viewpoints unless you’re looking for an argument that ends with either “You don’t know anything I’ve been around longer then you have” or(and this one is my favorite) “You’re a woman you don’t know shit”.Needless to say this has produced arguments with my mother who while she has her faults,understands that my dad has massive lack of respect for me,my brother(don’t get me started),and my mother herself.Okay here goes…in his fits of rage my father has hit, choked,pinned,strangled my mother into submission.He’s beat my brother and I with leather belts across our backs and legs when we dare call him out on his behavior(believe it or not in some areas of the south they consider this good parenting!smfh).He’s threatened to hit me with a metal wall decoration(when I asked him why he thinks he has the right to do that he responded that along the lines of ‘Because you disrespected me;I have to teach you a lesson’).My mom’s no angel either, since the woman almost killed me by throwing me towards a tree headfirst, no sh$t, I flew about 10 feet before i hit the ground.So yeah I have a dysfunctional family, to say the very least.Today, however it came to a head, with my mother in a fit of paranoia wanting to search the trash for some lost item.My younger brother us still upstairs at this time.My dad was holding the trash bag and not wanting to dirty the floor rebuffed her.In hindsight, if he just ket her rummage through the trash it probably would defused a lot of tension.But shoulders bumped,and brooms were thrown.The catalyst,however,was a volley of threats my mom launched at my father.Remember when I said my bigot of a dad had a tiny problem with anger?Well this came into play when he grabbed the iron on the counter and started towards my mom.I held him back-he’s a massive man-and he relented, but not before saying that he would ‘take my mother’s head off’ if she didn’t shut her mouth.I, noble as I am, said “You aren’t going to hurt sh#t”.Ha, I wish.Replace sh&t with anyone and that’s what I muttered.Well it’s none of your business;ya’ll can’t handle me(he’s an arrogant a##hole as well).I retreated, and he said ‘I’ll knock both of your brains out’.He had put the clothing iron down by this point.So let me cut to the chase, wth do i do?Should I tell a relative(my grandmother is well aware of his anger issues).The school counselor? What if the fact that I snitched(hood lingo) on him makes it way back to the man himself.I under no illusion that this is uncommon , and I feel the police will just give my dad a slap on the wrist.(The cops in this town tend to blame the one who called,at least partly in my experience,I called them when I was having a altercation with my mom,I know that sounds bad coming from a male however keep in mind this is the woman who threw me like a sack of flour previously and lacerated my back in this particular incident,plus she has 50 plus pounds on me I would be naive not to defend myself , but moving on).I seriously fear for the rest of my familys well being if one of us pushes the wrong button.I have taken measures to defend myself only in the case that I might serious lose my life.I am 17 year old black male with a 15 year brother,who I have sworn to protect.So to restate the question, what should I do about my dad?