Thousands of people attends a "Lovefest" vigil against terrorism in in Sergels Torg, central Stockholm, Sweden, Sunday, April 9, 2017. A hijacked truck was driven into a crowd of pedestrians and crashed into the department store Ahlens, background center, on Friday in the Swedish capital. (AP Photo/Markus Schreiber)
Thousands of people attends a “Lovefest” vigil against terrorism in in Sergels Torg, central Stockholm, Sweden, Sunday, April 9, 2017. A hijacked truck was driven into a crowd of pedestrians and crashed into the department store Ahlens, background center, on Friday in the Swedish capital. (AP Photo/Markus Schreiber)