Some ideologies are, in fact, mutually exclusive and cannot tolerate the others. Fascism cannot be tolerated, for instance. Nor can a belief in chattel slavery as a universal good. Sometimes an opposing ideology is just too fucking evil to be allowed to persist.
Setting the line that must not be crossed is a hard no problem though. And misplacing that line an inch incorrect in either direction can be horrible too.
Some ideologies are, in fact, mutually exclusive and cannot tolerate the others. Fascism cannot be tolerated, for instance. Nor can a belief in chattel slavery as a universal good. Sometimes an opposing ideology is just too fucking evil to be allowed to persist.
Setting the line that must not be crossed is a hard no problem though. And misplacing that line an inch incorrect in either direction can be horrible too.