https://youtu.be/_KgFBciS_X0?t=35m59s



ORLANDO, Fla. — Six years before Omar Mateen would kill and injure dozens of people in an Orlando nightclub, he was captured on hidden camera insulting the people trying to clean up the BP oil spill in the Gulf of Mexico.



The man behind America's deadliest shooting was working security for the company G4S when a filmmaker from "The Big Fix," Rebecca Tickell, drove up and asked about the cleanup operation.



Mateen asks her if she has a badge, and Tickell responds, "I'm actually just wondering what's going on here?"



When she asks if she can talk to anyone, Mateen goes off, saying, "No one gives a s---, no one gives a s--- here."



Without being prompted, he continues:



"Like, everybody’s just out to get paid. They’re, like, hoping for more oil to come out and more people to complain so they’ll have job. ‘Cause once people get laid off here, it’s gonna suck for them. They want more disaster to happen. That’s where they’re money-making is."



The security company confirmed to CBS News that Mateen was the guard in the documentary.



On Sunday, Mateen picked up a semiautomatic rifle and walked into Pulse nightclub in Orlando and opened fire, killing 49 people and injuring 53 others. Doctors say some of the wounded are in critical condition and the death toll may rise in the coming days.