David Cameron, the British prime minister, has said that the authorities should consider blocking individuals' access to social media if they are plotting violent acts, in the wake of the week's riots and looting.

"Teachers at the lower Manhattan school said that the day began with a fight between two students on the building’s third floor. After the fight, Bergtraum principal Andrea Lewis reportedly announced over the school’s loud speaker that in the future, students who fought would be arrested. Lewis reportedly told students and staff that for the rest of the day, the school’s bathrooms would be closed and teachers should not issue bathroom passes."