So on the DC metro there was a stabbing after the victim resisted the attacker's attempt to rob him. Bystanders stood by and did nothing, some even got robbed after the attack. It has ignited a debate on what should be done during a public attack like this. Story here Focus: What would you do, or have done, in a situation like this? Do you think there is a 'duty' to intervene in a dangerous situation like this? Alt Focus: Stories of riding public transport.