Sousse, Tunisia—A man lays flowers June 28 on the beach where tourists were shot dead in front of the Hotel Imperial Marhaba. Saif Rezgui, a 24-year-old Tunisian student, killed at least 38 people, mostly British and other European tourists. Dressed in shorts and a T-shirt, the attacker pulled out a Kalashnikov rifle he had hidden in a beach umbrella and opened fire on the beach before pursuing foreigners to the hotel’s pool. He was eventually shot dead by police outside the hotel. ISIS claimed responsibility for the attack.