For you to excel and find fulfilment in your career, such a career must be one that you are very much interested in or passionate about, and also allows you to develop and utilize your potentials. Another important factor to consider is whether that career will be relevant in the future when you would have graduated from tertiary school and ready to practice that career.
Therefore, your career choice should not be based on what your parents or other people want for you but on what you want for yourself after you have considered the above factors.
However, it is common for parents to suggest careers to their children based on their observations about the abilities of the children and their projections about what they think will be more beneficial to the children in the future. This kind intention on the part of parents should be appreciated. Hence, you do not have to be angry with your parents, you only need to let them know in a very polite way that you appreciate their involvement but you would like to follow your passion. If you you do this and your parents still insist on their choices, you may ask your school counsellor or any other enlightened adult that they respect to help to talk to them about this.