Cornelia sets a trap for Zero, and Lelouch can't help take the bait.
C.C. bails him out by disguising herself as Zero and drawing attention away from him right before he is caught.
Cornelia is a higher class of enemy than Clovis was. Lelouch will have to up his game.
Zero and the resistance rebrand as The Black Knights Of Justice. Including matching uniforms.
They take the fight to another terrorist group who have taken civilian hostages. (Including most of the student council and Euphemia.)
Attacking the unarmed is out of bounds now.