During the Bondi Beach attack on Sunday, footage showed a man approach a gunman and wrestle the weapon away. The 43-year-old, identified as Ahmed al Ahmed, a local fruit shop owner, was shot twice in the act. His intervention was extraordinarily brave and likely prevented further deaths, though the precise number saved is unknowable. The scene echoed a similar bystander intervention during the Bondi Junction shopping centre attack in 2024.
These incidents provoke two questions: why do some ordinary people take extreme risks to intervene, and is that the right choice compared with official safety advice? Popular discussion often invokes the “bystander effect,” the idea that people freeze when others are present. But behavioural research paints a more nuanced picture. A large meta-analysis finds that in clear, dangerous emergencies—especially when a violent perpetrator is visible—the classic bystander paralysis weakens or can even reverse. When a threat is obvious and life-threatening, people recognise the need to act more quickly and are less likely to look to others for cues.
Empirical analysis of more than 100 suicide attacks in Israel similarly suggests bystander action often reduced casualties. Interventions usually didn’t stop attacks entirely, but they disrupted attackers’ timing and location, forcing premature action in less crowded places and saving lives. The same research also shows interveners frequently paid a direct personal cost.
Active bystander behaviour takes many forms beyond physical confrontation. It can mean noticing and reporting worrying behaviour early, guiding or directing others to safety during an event, sharing timely information, or coordinating help afterward. These lower-risk actions can still materially reduce harm.
Official public-safety guidance generally discourages direct confrontation. Australia’s national campaign frames its advice as “Escape. Hide. Tell.”:
– Escape: move quickly and quietly away from the danger if you can do so safely.
– Hide: keep out of sight and silence your phone if escape isn’t possible.
– Tell: when safe, call police by dialing Triple Zero (000).
This guidance focuses on maximizing survival in the minutes before emergency services arrive and does not promote confronting an attacker. The U.S. FBI’s guidance, “Run. Hide. Fight,” similarly lists “fight” only as a last resort when running and hiding aren’t possible and life is in immediate danger. Australian authorities emphasise avoidance and reporting over direct confrontation.
Behavioural research offers practical, evidence-informed tips that can improve survival odds in violent incidents, especially in crowded places:
– Move away from the threat decisively and quickly; slow, tentative withdrawal increases risk.
– Avoid lingering to gather information, inspect the scene, or record video—these behaviours delay escape and expose you to harm.
– Stay agile: keep scanning the environment and adjust your route rather than stopping to reassess in the open.
– When evacuating in groups, adopt single-file or back-to-back “snake” formations rather than moving side-by-side holding hands; this reduces congestion and improves flow.
The recent attacks in Sydney are traumatic reminders that crowded public spaces are vulnerable to deliberate violence, whether motivated by terrorism or other causes. Preparing for these risks needs to be more mainstream: public messaging should be evidence-based, clear, and widely accessible, emphasising avoidance, rapid reporting, and practical crowd-movement strategies.
With major public events and large gatherings approaching, including New Year’s Eve, being aware of these risks and staying vigilant is especially important. Knowing the recommended actions—escape if you can, hide if you cannot, and tell authorities when safe—paired with practical movement strategies, will improve individual and collective chances of getting through a violent incident alive.
