sectarian
/sɛkˈtɛəriən/
Sectarianism is a form of bigotry, discrimination, or hatred arising from attaching relations of inferiority and superiority to differences between subdivisions within a group. Common examples are denominations of a religion, ethnic identity, class, or region for citizens of a state and factions of a political movement. The ideological underpinnings of attitudes and behaviours labelled as sectarian are extraordinarily varied. Members of a religious, national or political group may believe that t...