Top 10 Worst Event Security Failures

Terrorists killed 90 concertgoers at an Eagles of Death Metal show in an attack that exposed how woefully unprepared European concert venues were for armed assault scenarios.

A gunman fired from the 32nd floor of the Mandalay Bay hotel into an outdoor concert crowd, killing 60 and injuring 411, exposing the impossibility of securing open-air festival venues against elevated threats.

Ninety-seven Liverpool fans were crushed to death at an FA Cup semi-final due to police failures in crowd control, with a subsequent cover-up that took 30 years to expose and bring to partial justice.

Ten people died at Travis Scott's festival despite attendees screaming for help. Investigations revealed understaffed medical teams, ignored warning signs, and a show that continued for 40 minutes after casualties began.

Thirty-nine Juventus fans were killed when a wall collapsed after Liverpool fans charged at them before the European Cup Final, in a crumbling stadium with inadequate segregation and policing.

Two pressure-cooker bombs near the finish line killed three and injured 264, revealing gaps in monitoring a 26.2-mile open course and transforming security protocols for every major marathon worldwide.

Palestinian terrorists infiltrated the Olympic Village and killed 11 Israeli athletes. The botched rescue attempt at the airport exposed catastrophic failures in Olympic security that were never supposed to be necessary.

One hundred fifty-nine people died in a crowd crush in a narrow Seoul alley during Halloween celebrations, with investigations finding virtually no police crowd management despite 100,000 people in the district.

Three suicide bombers targeted the France vs. Germany football match, but security guards who patted down one bomber and felt his vest prevented entry, likely saving thousands — a rare security success amid the November 13 attacks.

Terrorists killed 90 concertgoers at an Eagles of Death Metal show in an attack that exposed how woefully unprepared European concert venues were for armed assault scenarios.

A gunman fired from the 32nd floor of the Mandalay Bay hotel into an outdoor concert crowd, killing 60 and injuring 411, exposing the impossibility of securing open-air festival venues against elevated threats.

Ninety-seven Liverpool fans were crushed to death at an FA Cup semi-final due to police failures in crowd control, with a subsequent cover-up that took 30 years to expose and bring to partial justice.

Ten people died at Travis Scott's festival despite attendees screaming for help. Investigations revealed understaffed medical teams, ignored warning signs, and a show that continued for 40 minutes after casualties began.

Thirty-nine Juventus fans were killed when a wall collapsed after Liverpool fans charged at them before the European Cup Final, in a crumbling stadium with inadequate segregation and policing.

Two pressure-cooker bombs near the finish line killed three and injured 264, revealing gaps in monitoring a 26.2-mile open course and transforming security protocols for every major marathon worldwide.

Palestinian terrorists infiltrated the Olympic Village and killed 11 Israeli athletes. The botched rescue attempt at the airport exposed catastrophic failures in Olympic security that were never supposed to be necessary.

One hundred fifty-nine people died in a crowd crush in a narrow Seoul alley during Halloween celebrations, with investigations finding virtually no police crowd management despite 100,000 people in the district.

Three suicide bombers targeted the France vs. Germany football match, but security guards who patted down one bomber and felt his vest prevented entry, likely saving thousands — a rare security success amid the November 13 attacks.