There's nothing you can do to get through to your parents. They are obviously paranoid/delusional with no grasp of statistical probability or understanding of what information makes the news/talk show cycle. A nineteen year-old man should not be subject to such arbitrary, whimsical, and controlling limits on his interactions by his parents. I suggest testing them on their threat to kick you out of the house. If they really do so, you're better off without them.
Quote:
"There are orphanages," he exclaimed to himself, "for children who have lost their parents--oh! why, why, why, are there no harbours of refuge for grown men who have not yet lost them?"
- The Way of All Flesh, Samuel Butler