I don't know who he was but the site he was screaming out was infowars.com. I think he was trying to draw attention to the photos you may have seen of the black backpack special ops guys who popped up in a few images
I really don't think there's a big conspiracy with them. I think the article correctly identified them as members of a private security firm, but I really just think the city authorities hired them to assist with protecting the race, which probably explains why one of them appeared to be walking around with a radiation detector.
