Biker foils robbery by taking off the key

This biker was riding through the streets of São Paulo, Brazil, when at a red light two robbers, also on bike, approached him [at 03:37]. One robber turned the key off and ordered the owner to go away. After a brief resistance, the victim (wearing gloves) took the key off and ran with it. Then the robber realizes that the robbery was foiled and flees with his chap. The footage goes on with the victim heading to the police station.