The hand signals all have meaning. The handshakes, the gestures, holding hands behind back, how the feet are positioned. This is how it works. This way in Congress they can say one thing with their mouths and let their colleagues know when what they're saying is bullshit or not, so they can send messages over the heads of normal people. The OK is the 666, but it's unclear exactly how it's being used here. I think a big part of it is to control the kids in the cult, so that they see that everyone in public life is in the cult too, so they have to do it all the time.