Laws that make it illegal to act in a prejudiced way against groups of people in school or at work. Anti-discrimination laws are written to protect people from discrimination based on their race, age, sex, religious affiliation, ability, nationality or body type. Some states have anti-discrimination laws that also make it illegal to discriminate against people due to their sexual orientation or gender identity. Some states do not. For more information about the laws in your state check out Sex in the States.