Discrimination is when someone treats you differently or unfairly because of something about yourself that makes you different from them or others– it may be because of your race, culture, religion, gender, sexuality, or age. If they stop you from doing something because of one of these things, then that is discrimination.
People shouldn’t discriminate against you, and you have every right to feel upset about it, but you shouldn’t let them get away with it. To report discrimination is usually the best thing to do – e.g. if you’re discriminated against at school you could tell a teacher who you trust to help you be treated fairly. If you are older and trying to get a job when you feel like you are being discriminated against, then the person who interviewed you can be tested by a questionnaire under the Equalities Act which can help to show whether they were hiring fairly or whether there was discrimination happening.