World leaders express sadness after Seoul stampede kills 151


              Debris is seen at the scene where people died and were injured in Seoul, South Korea, Sunday, Oct. 30, 2022. after a mass of mostly young people celebrating Halloween festivities became trapped and crushed as the crowd surged into a narrow alley. (AP Photo/Ahn Young-joon)
            
              Police officers inspect the scene where people died and were injured in Seoul, South Korea, Sunday, Oct. 30, 2022, after a mass of mostly young people celebrating Halloween festivities in Seoul became trapped and crushed as the crowd surged into a narrow alley. (AP Photo/Ahn Young-joon)
            
              South Korean national flags fly at half-mast at the government complex in Seoul, South Korea, Sunday, Oct. 30, 2022. A mass of mostly young people celebrating Halloween festivities in Seoul became trapped and crushed as the crowd surged into a narrow alley, killing dozens of people and injuring dozens of others in South Korea's worst disaster in years. (AP Photo/Lee Jin-man)
            
              Flowers are seen near the scene of a deadly accident in Seoul, South Korea, Sunday, Oct. 30, 2022, following Saturday night's Halloween festivities. A mass of mostly young people celebrating Halloween festivities in Seoul became trapped and crushed as the crowd surged into a narrow alley, killing dozens of people and injuring dozens of others in South Korea's worst disaster in years. (AP Photo/Ahn Young-joon)