Terrorist Attacks Against Bars, Restaurants, and Nightclubs Worldwide Highlight Importance of Public and Private Sector Partnerships in the Homeland [open pdf - 494KB]
"Historically, terrorists have frequently targeted public places and mass gatherings, including bars, restaurants, and nightclubs, which typically have high occupancy and few security measures. Such attributes increase the likelihood that terrorists will continue to plot against and attack these soft targets, including the self-proclaimed Islamic State of Iraq and the Levant (ISIL) which has encouraged this strategy to violent extremist audiences on social media and in their English-language publications, as recent as January 2017, a trend that will likely continue. We judge that terrorists perceive this as a viable attack strategy that is likely to be more successful than more complex and sophisticated attacks against harder targets."
U.S. Department of Homeland Security: http://www.dhs.gov/