Well, I’ve watched the video and some things don’t add up. If there was a smoke bomb, why is everyone milling around the subway doors, walking back and forth? How do they know it was “just” harmless smoke? Why are they not grabbing their masks and coughing, trying to escape the smoke? The masks.... people with their homemade masks impervious to “smoke? Why aren’t they heading for clean air? They seem to be looking for something. The natural thing to do is get the heck out of there. Head for the stairs, get out. For all they know, it could have been a chemical or bio attack. They’ve heard about it. Why is everyone holding and looking at their phones? Self preservation instinct should have kicked in. Get the heck out, ask questions later and recover anything forgotten later. So that doesn’t make any sense. When people are injured, bystander’s instincts would also be to help them get to safety. Not stay right where the attack happened. There could still be danger. People panic and want to get away from the danger. It’s the good old fashioned “fight or flight” instinct. I see none of that happened. It’s like they were looking for dropped money or something. Bottom line is, if you’re attacked, you don’t go back and forth, hanging out at the site.

I know nothing about the guy breaking down the video but I see nothing of what would happen in a real attack.