FILE PHOTO: French police block the access to the Bataclan concert hall before the visit of members of a French parliamentary committee investigating government measures to fight shooting and bombing attacks at the site four months after a series of attacks at several sites in Paris, France, March 17, 2016. REUTERS/Benoit Tessier/File Photo
FILE PHOTO: French police block the access to the Bataclan concert hall before the visit of members of a French parliamentary committee investigating government measures to fight shooting and bombing Show more

The unexpected truth about mass panic