Buddhism and parents?

I have been reading up about buddhism.I have always thought about maybe becoming a Buddhist as I've always believed in karma and have always had a love for animals and other living things. My family is all Christian. They have always believed that I have been Christian, even though I have been an atheist for years now. I told my parents that I want to change my religion recently, and they are outraged. Right now I don't know what to do. Its as if I'm being told off for my own opinion. Please help x