[Tainan]

Watching these vid links, I am dismayed by one tactic I see repeatedly used - the "Call & Repeat Chanting."

This is straight out of the communist handbook for cell organization. It is a means of brainwashing and indoctrination of the weak minded.
Through repetition and group-pressure the desired 'message' is implanted into the psyche of the targeted persons.
This can have scary outcomes in those who have, for whatever reason, fragile mental conditions.

I have seen this used many times by these groups and see its use increasing as the organizing cadre become more adept and bold.

[Travis McGee]

Yes indeed. It’s not only a brain-washing tool, but a way for communists who know the call-and-repeat methods to take control of a large group, even as a minority, because they can control the message flow. Twenty chanters can take over 100 folks in a mob in no time at all and emerge as the leaders, every time.