Protected classes are specific categories or groups of people legally shielded from discrimination, ensuring they receive equal treatment and opportunities. These protections have been established to address historical and ongoing biases, prejudices, and unfair treatment certain groups face in various aspects of life, such as employment, housing, and education.

A real-world example would be a job applicant, Jane, who is well-qualified for a position but is not hired due to her pregnancy. In this case, Jane has experienced discrimination based on her sex, a protected class. She could then file a complaint or take legal action against the employer for violating anti-discrimination laws.
By understanding and respecting protected classes, we can work together to build a more inclusive and equitable society free from unfair treatment and discrimination.