People observe a nationwide minute's silence on the 10 year anniversary of the 7/7 London attacks which killed 52 people, facing in the direction of a plaque and flowers laid at the location of where ... more 
People observe a nationwide minute's silence on the 10 year anniversary of the 7/7 London attacks which killed 52 people, facing in the direction of a plaque and flowers laid at the location of where a suicide bomber blew themselves up during the morning rush hour on a bus in Tavistock Square, London, Tuesday, July 7, 2015. Britons marked the 10th anniversary of suicide bomb attacks on London's transit system Tuesday, as Prime Minister David Cameron said the recent slaying of 30 British tourists in Tunisia was a reminder that terror threats remain real and deadly. (AP Photo/Matt Dunham) less 
1 / 30
Associated Press | Photo By Matt Dunham
Tue, Jul 7, 2015 7:03 AM EDT