Lovelife;
I'm sorry for your troubles. It does sound like a toxic environment that you're in. One thing that can help is to never discuss politics or religion with your parents. Those are hot button issues with many people, and it's clear that your dad doesn't want to hear your opinion.
Try to stay away from home except for when you need to be there -- ie, sleep and eat. Stay at school, study in the library. Go to the gym. Go to functions at the school, (I assume it's college?) In short, create a life for yourself away from home. One that is filled with things YOU enjoy, and with people with whom you can share thoughts, feelings and hopes.
You deserve nothing less.
Be good to yourself. Take it one day at a time. Start by doing one thing that is good for you. Remember to look after yourself physically, mentally, emotionally and spiritually. Your entire self deserves it.
Shalom!