Key points

Resentment is "available fuel" for aggression, not a direct cause—most resentful people never harm others.

Social media amplifies resentment by turning private frustrations into publicly validated grievances.

People with high "justice sensitivity" feel unfairness more viscerally, making them prone to grudges.

Unlike anger, resentment builds mental infrastructure through rumination and moral storytelling.

Jake scrolls through LinkedIn at 2 AM, watching former classmates announce promotions while his retail paycheck barely covers rent. The unfairness burns steadily and low—not sharp rejection, but chronic injustice. By morning, that heat will find an outlet: snapped words with his girlfriend, a confrontation with his manager, or another angry post that his friends will quietl

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