The only thing you can do is press on. If you fail to apply because your afraid of what your parents are going to do then you'll get nowhere. You might have to wait a few years after moving out of your parents house and breaking contact with them. This would give them no current information about you. Rest assured your BI will see through the BS.
My mother refused to return a questionnaire for one police department I had applied at and the agency would not process my BI while waiting for the questionnaire. I grew tired of waiting and went back into the military. My mother was angry when she was told the only reason I went back into the military was because the police department refused to process my BI while waiting for her questionnaire. She was advised of this fact when she complained to my wife about me being deployed to the middle east and being in a dangerous place.
But when a long train of abuses and usurpations, pursuing invariably the same object, evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new guards for their future security.
Translation for the intellectually challenged: If the government screws the people too much, it is the right and duty of the people to revolt and form a new government.