Discrimination is a widespread problem especially in the areas where mulitiple nationalities live together. Some come in the form of jokes and to some people, it's normal. But to someone who isn't used to such kind of treatment, it can be very insulting and offensive. To can't keep yourself from discrimination because you can't possibly control other people. The only way to get away with it is self-acceptance. If you love yourself and thank God for everything, discrimination won't affect that much. Learn how to handle situations with humility and patience.