Resentment, envy, vengeance and sadism are vicious impulses that any decent politics should deprioritize, if not delegitimize altogether, and that each person should try to overcome, not feed and cultivate.

Notice, all these vices are oriented not by positive goals, but by negative ones against particular people, against an enemy.

Any ideology that sees resentment and envy as demanding redress, vengeance as an entitlement of the aggrieved, and sadism as justified when it is an expression of anger at past mistreatment will produce cycles of intensifying anger and violence.

Any politics founded on these vices will corrupt any person who participates in it. And such contentious enemy-focused negative ideologies need their enemies as participants, and consequently seek to force their participation in conflict. Participating as an enemy carries the same risk of corruption as participating as a partisan.

Defeat and annihilation of the enemy is one kind of victory for a negative ideology. Corruption and degradation is another.