Kind of a weirdly link-baity title, really. If you're checking the comments to see if this is some sort of tedious lecture about some buzzword or other before clicking through, it's not; it's the results of a sort of weird/interesting social experiment, and it's at least modestly interesting. The "bulldozing" in question occurred only in one specific situation.
I'm still confused why that happened. I walk in lots of crowded places and am perfectly capable of not "trampling children" without a need to vocally warn them about my movement... Like, just if you're going to run into a kid... just Don't do that?