The behaviour of these guys you observed is already implying something: They are a little bit special. If you have a few Chinese friends, ask them if they know about "独运轮". Ask a few, preferablly with no strong political opinions. The guys you met belong to "轮", the last group of the 3.
Together with other 2 groups, "轮" unintentionally built support to current Chinese govenment among oversea Chinese especially young students. If you happened to have chance to meet many oversea Chinese, you can test if it's valid.
This sounds interesting, but doesn't help understand what you're trying to explain. At least not right now, at my computer. Are there any written explanations you could point us to?
edit: Google translates those three characters as "exclusive wheel"... the mystery continues
So basically, the major movements and organizations that the Chinese government opposes. China attempts to quell independence efforts in these three regions, puts down and censors information about democracy (see e.g. Tiananmen, 1989), and suppresses the Falun Gong cult/movement.
Together with other 2 groups, "轮" unintentionally built support to current Chinese govenment among oversea Chinese especially young students. If you happened to have chance to meet many oversea Chinese, you can test if it's valid.