Deposition (or dismissal, termination, expulsion, firing or dropping out) by political means concerns the removal of a politician or monarch. It may be done by coup, impeachment, invasion, or forced abdication. The term may also refer to the official removal of a clergyman, especially a bishop, from ecclesiastical office.
Notable deposed bishops
Cyril of Alexandria
Cyril Lucaris
John Chrysostom
Nestorius
Photios I of Constantinople
Antipope Benedict XIII
Antipope John XXIII
The Nine Bishops of the Nonjuring Schism
Robert Duncan, VII Bishop of Pittsburgh
Mark Lawrence, XIV Bishop of South Carolina
John-David Schofield, IV Bishop of San Joaquin