Communism, Fascism, Late-stage capitalism, and radical liberalism all lead to oppressive environments and eventual death when the status quo isn’t followed. Hence they are “extreme ideologies“. There are Christian cults in New Zealand that exert traumatic abuse on those lured or otherwise born into the cult. Islamic Jihadi, when you militarize and take Islam to its absolute extreme is also known to produce oppressive environments where dissent often results in death.
The only things you could really make that case for would be fundamental Christianity and late-stage capitalism, one because their belief does not naturally lend itself to violence and the other because it hasn’t been allowed to happen yet outside fictional narratives like Bio Shock.
All extreme ideologies lend themselves to an environment that is in direct opposition with the best interests of a healthy and happy society and should be regarded as such accordingly.