What should I do if my parents are forcing me to study a career I don't want?
You are presumably an adult, you should not do something so important to your life as studying only for your parents wishes. Guilt-tripping children is very bad parenting, you should not feel ashamed to do your own thing.

However, before you start doing your own thing, think about what the consequences could be. Can you afford studying without your parents help?  Can you afford being at war with your family? Is there some sort of compromise you can find with your parents? Those questions only you can answer, and you (unfortunately) have to consider them. But never feel ashamed for studying what you want to.