IranNewsNow:

Unbelievable video showing Basij motorcycles on fire and people chanting, “I will kill, I will kill, those who kill my brother!” Massive clashes. Nearing the end of the video several fights can be seen in what appears to be people beating a plainclothes agent. Also, it looks like a protester or perhaps a plainclothes agent is lying motionless on the ground.

More incredible footage after the jump (one of the burning bikes sets a building on fire):

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