indoctrination
noun /ɪnˌdɒktrɪˈneɪʃn/
  /ɪnˌdɑːktrɪˈneɪʃn/
[uncountable] (disapproving)- the act or process of forcing somebody to accept a particular belief or set of beliefs and not allowing them to consider any others- political/religious indoctrination