Hmong people
When Western authors first came in contact with Hmong people in the 18th century, they referred to them by writing ethnonyms which were previously assigned to them by the Chinese (i.e., Miao, or variants). This practice continued into the 20th century. Even ethnographers studying the Hmong people in Southeast Asia often referred to them as Meo, a corruption of Miao applied by Thai and Lao people to the Hmong. Although "Meo" was an official term, it was often used as an insult against the Hmong people, and it is considered to be derogatory.