In short, if NO ONE insists on executing Medzh, then he should be supported, even if he might be wrong.
if a player robbed Medzh-mafia, he would execute him.
if a player robbed the Master, then Medzh is peaceful, because he was blocked by the town and the mafia.
2. There's a possibility that the Master is Gorio, and Medzh is another mafia member (Balzac, if Grande killed him, or Grande, if Balzac killed him), blocked by the town and a serial killer.
Added 1 minute later
You know why.
THINK!
Если где-то чего-то убудет, то в другом месте добавится.
(Закон сохранения).