I don't know what to do. I'm scared to go to school
This sounds like a problem. Why are you scared to go to school? What exactly are you scared of there?
I'm scared that I might get murdered by other students.
Getting an education is very important for your future and you need to attend classes in order to become educated. If you have concerns about your physical safety at school, you should contact the authorities in your school to make them aware and provide you a safer learning environment. It is their responsibility to provide safety in school but they won't be able to do anything unless you tell them about the problems you are experiencing with other students.
I'll just confront the gang members in school and make them go away.
You might not want to do that, because they could be dangerous. It's better to just speak to a principal about these kinds of problems, and let them handle it. It will be much less dangerous for you than approaching them yourself.