Mafia 101. Disputed Island

Why Drakkosha?

Because the first injured one was aiming a revolver at her killer. Only Ricchi has a revolver now.

Because Alex's defense is already gone, unlike Zero's. ;)
Added after 51 seconds
No, Zero might not have it either, but that's not a fact yet. But the fact that Alex doesn't have it is a fact.

I doubt that Alex should be executed because something is already burned out in him and will continue to burn out, i.e., he is potentially dangerous only in the next 1-2 nights. Zero is much more dangerous then.