Meanwhile, Suzaku detects C.C. in attendance. He goes to ask her something, but as he touches her, there is some kind of flux in the power of geass, knocking him out and causing C.C.'s geass mark to flare.
And pushing Lelouch's geass out of control, so that it it always on.
Lelouch's example becomes an order, and Euphemia opens fire into the crowd, then order her soldiers to as well.
The opening of the Special Administrative Zone becomes a lie and a massacre.
Zero orders the Black Knights to fight. Only he and C.C. know that this was a mistake.