Tell your parents you plan on writing a letter to Brooklyn expressing their desire to kick you out and you going through a depression stage. I'm sure that will make them sit up quickly because they know that their masters do not advocate kicking someone out merely because they don't buy the crap their selling.
Moreover, tell them that you are on the border of suicide and if and when you do go, you'll be mailing a letter to the local news spelling out why you did it and what led you to it. But be sure to mention this in your letter to Brooklyn.
In dealing with depression, first let me say I'm sorry you are going through such a rough time. Most of us here have gone through it and we can certainly sympathize. The best advice I can give you is to meditate remaining positive. I would highly recommend reading Napoleon Hill's books. They are incredibly refreshing and great for redoing your life over. Best of luck to you. I'm always available in IM if you ever need an ear.