Plagiarism charges downed Harvard’s president. A conservative attack helped to fan the outrage

American higher education has long viewed plagiarism as a cardinal sin. Accusations of academic dishonesty have ruined the careers of faculty and undergraduates alike.

The latest target is Harvard President Claudine Gay, who resigned Tuesday. In her case, the outrage came not from her academic peers but her political foes, led by conservatives who put her career under intense scrutiny.

Reviews by Harvard found multiple shortcomings in Gay’s academic citations, including several instances of “ duplicative language.” The university concluded the errors “were not considered intentional or reckless” and didn’t rise to misconduct. But the allegations continued, with new ones as recently as Monday.