The Metropolitan Police said it arrested 523 people at a London protest supporting Palestine Action after warning that it would enforce the ban.
The Metropolitan Police said it arrested 523 people by midnight on April 11, 2026, at a protest in Trafalgar Square supporting Palestine Action.
The protest was organized by Defend Our Juries. Police had warned a day earlier that people showing support for Palestine Action would be arrested.
Early reporting from AP and Al Jazeera said arrests were already under way during the demonstration, while later coverage and the Met’s own count put the total at 523.
The Guardian reported that those detained ranged in age from 18 to 87. The protest became one of the largest mass-arrest operations linked to the Palestine Action ban since the group was proscribed.
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