Exposing the Dreyfus judicial error temporarily intensified social antisemitism

Evidence

“But this was the moment when from the effects of the Dreyfus case there had arisen an antisemitic movement parallel to a more abundant movement towards the penetration of society by Israelites. The politicians had not been wrong in thinking that the discovery of the judicial error would deal a fatal blow to antisemitism. But provisionally at least a social antisemitism was on the contrary enhanced and exacerbated by it.” — Hannah Arendt, The Origins of Totalitarianism, 2087

Categorization

• QUESTION: Worth chasing: how does exposing a judicial error against one group paradoxically intensify social prejudice against them, and under what conditions would the opposite occur?