Seoul Halloween crowd crush: How could it have happened?

Following the tragedy in South Korea's Itaewon which claimed the lives of many people who were out for Halloween festivities, crowd control and safety expert Keith Still explains what happens in such crowd crush incidents, and if they can be prevented. How disaster unfolded: https://cna.asia/3DtdnRV Subscribe to our channel here: https://cna.asia/youtubesub Subscribe to our news service on Telegram: https://cna.asia/telegram Follow us: CNA: https://cna.asia CNA Lifestyle: http://www.cnalifestyle.com Facebook:   / channelnewsasia   Instagram:   / channelnewsasia   Twitter:   / channelnewsasia   TikTok:   / channelnewsasia