[Sam Gamgee]

Good = evil. Evil = good. The evil doers really honestly think they are doing good. That is what confounds me.

[Farmer Dean]

Satan has their minds in a fog.

[fortes fortuna juvat]

The evil doers really honestly think they are doing good. That is what confounds me.
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The explanation: It is the result of the enormous power of years and years of political and social indoctrination.