I strongly lean towards the "Look at what they're doing to me!" explanation, i.e., playing the victim card, versus a "Long live the Revolution" defiance theory.
You have to look at it in the fuller context, of how he was acting. Privately he was defiant; publicly he was the "I don't know what this is about, I'm a victim".
Yes, he was “playing the victim”. However, he was a manipulator. That is to be expected in an act by a manipulator. But, the fist is incongruous with the type of display one might expect for being a victim. Also, when we put his writing the following into the context, the anarchy thing makes a lot of sense to me.
I wonder what would happen if somebody was to stand up and say he was utterly opposed not only to the governments, but to the people, too ...Most of the people who encountered LHO after he was arrested said he appeared to be defiant, arrogant, etc. Like Lance, I would like to see his expressions leading up to the fist display and afterwards. I cannot help but believe that he must have thought that the fist was a somewhat discreet way for him to show his true colors. Thankfully, the photo of the monk in Saigon on fire reminded me that LHO is burning eternally down below…