Political correctness language (also known as PC) aims to avoid any form of descrimination or perceived discrimination against social, economic or political groups defined by race, gender, religion, ethnicity, age, disability or sexual orientation.
See gender-neutral terms such as firefighter in the place fireman and firewoman, police officer in place of policeman and policewoman; value-free terms describing physical disabilities, such as visually impaired in place of blind and hearing impaired in place of deaf; value-free cultural terms, such as Holiday season and Winter holiday, in place of Christmas.