Scott Lucas posts a reader's take:

The big points won are 1) the brutal treatment of (Zahra) Rahnavard and (Mehdi) Karroubi gives them more revolutionary stature and 2) the regime did not succeed in outshining the demonstrators because once again it had to resort to violence and not just outnumbering the protesters. The news of the brutality will ruin the image of a populist government that the regime wants to display.

This is a regime that prides itself in its ability to rally masses on these occasions. Today it has lost more credibility. If no further developments or revelations occur, the opposition needs to rethink its strategy of demonstrating on official and permitted days when the regime has time to plan and clamp down on its moves. Also it will become more apparent that in the face of such regime tactics and brutality more organization and leadership is needed.

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