Inquire, argue dispassionately. Know that most who discriminate have taken extra helpings of bigotry and stereotypes. They feast on ignorance and eschew any dish that challenges their worldviews or privilege, as if they'd starve if it wasn't part of the menu.
Live your life wholly, authentically, challenge when it is necessary to your mental, physical or emotional life. Invite allies to the table. Demand more social justice, equality, and non-judgment be served. We'll all be healthier if we took more time to watch what we eat.