First, watch this:
Trust me, if you haven't seen it, it's worth your time.
OK? Now, watch this:
Both are examples of large numbers of people performing coordinated acts. The first is, in a word, beautiful.
The second, frankly, creeps me the hell out.
The first required literally weeks, months, and in the case of the organist, years of practice to make that performance come off. The second? Merely required a bunch of willing minions.
Human beings, for the most part, are herd creatures. We have, as a species, a need to belong to something, to be a member.
It's something I personally don't do well. I don't really grasp it. I've been asked several times why, if I like firearms so much, didn't I join the military? Simple - I wouldn't fit in, and I know it. Or I would, but I'd hate every second of it, which is essentially the same thing.
I watch hundreds, perhaps a couple thousand people doing what some disembodied voice tells them to do in a public park, and I cannot understand why. Yet I can understand the group performance of the Hallelujah Chorus. One is an exercise in mind-control. The other, an act of beauty.
But at the bottom, they both make use of the human need to belong.
And I cannot help but wonder if that voice had told those "two tribes" to kill each other, if some would not have tried it without thinking...