Shops in London are shutting down Monday after several were looted Sunday night. London's Stratford theatre has also been closed out of fear of continued rioting. Police have already arrested 160 people and accused them of “copycat criminal activity,” referring to Saturday’s riots, which erupted after police killed 29-year-old Mark Duggan. (The Guardian notes that ballistic tests cast doubts on police’s claim that Duggan fired a weapon at them.) Thirty-five police officers were injured in Saturday and Sunday’s riots. The mayor of London will reportedly return to the capital Tuesday to deal with the crisis.