3. a. In Communist countries, a group of workers, etc., acting to promote the interests of the Communist Party; also, a member of such a group;
b. In the People's Republic of China, an office-holder in a Party, governmental, or military organization; also more widely, one who holds a position, esp. in a local organization, school, etc.
As used in the PRC, the term has its origins in Maoism and Maoist amendments to Marxist-Leninist organizational models. Therefore, it would be out-of-place in most other contexts.So "cadre" is a political word, right?