In brutal fashion, the mullahs have made their choice. As Juan Cole notes, it is laughable that Ahmadinejad "won" in the fashion the mullahs claim. Seriously fellas, you expect us to buy that Ahmad won Tehran by any margin, let alone 50%? Really?
The violence by the IRGC and the Basij militias is very real. More troubling? Reports like THIS and THIS. Put this together with speculation from Trita Parsi at the end of Laura Rozen's report, and we may be seeing a full-on crack-up of the regime of epic proportions, in which hard-liners are determined to destroy ALL opposition, brutality included (though the demonstrations are also inspiring).
We've not heard the last of this. Either we will end up w/ at least a partially liberated Iran governed by moderates or a fully oppressed, subjugated populace governed by hard-line Khomenist Islamists.
The populace faces an impossible choice: Revolt and (possibly) die, or acquiesce to disaster. Unfortunately, the same choice might already have been taken from Mousavi and Rafsanjani.