Joey,
Take a look at it from their end for a moment. They are confused as to what's going on and it's easy for them to pin the blame on something, be it the LGBT youth group, a "phase", your sexuality, or whatever they can partially wrap their brains around. Most parents are like this and it'll take them a while to understand any of it. Some of them never really get it, but they'll become supportive. (And some just don't.) You're angry because you want them to get it right away. My mom's said things like she wish I had died at birth so she wouldn't have to deal with this, but I've learned that it's just anger that she can't control. Outsiders think it's a horrible thing to say, and while it is, it's a response that's cultivated from their culture, traditions, upbringing, and lack of exposure/education. In a way, it's similar to the anger you feel when they don't understand. It's not that they don't love you. Or that they won't love who you were meant to be. All of it just takes more time and patience. If you guys don't get into screaming fights over things, then you can definitely end it calmly with, "You don't understand now and it's okay, we'll work through it together" or the likes.
She still doesn't get it, but whenever she starts to pick fights with me, I do what I can to not argue back as she's screaming. Once she runs out of steam, it's easier for me to then talk. I don't talk about the transition. I talk about life and what it means to just live. Her problem is she has no idea how to live. It's how I've gotten her to realize that I'm an adult and I can take care of myself. It's how I've gotten her to back out of my love life. And I'm incredibly lucky to have my younger brother who sometimes jumps in because he can't deal with the way she freaks out. But she's starting to really see me as a person and as someone who can thrive as who I want to be.
Dev