Nothing good was ever born from fanaticism

Fanaticism (from the Latin adverb fānāticē [fren-fānāticus; enthusiastic, ecstatic; raging, fanatical, furious]) is a belief or behavior involving uncritical zeal or an obsessive enthusiasm.

Characteristics of fanaticism. ...
Lack of tolerance. ...
Blind belief. ...
Extreme Radicalism. ...
Group identification. ...
Emotional manipulation. ...
Violence and conflict. ...
Discrimination and exclusion