Live Action Mafia

An open question to Alex:

It is stated that a mafia kills by tapping one on the shoulder. By "tapping," do you mean the action of touching with one's hand? I ask because, say, if I were to anticipate a mafia killing me, I would grab their hands and immobilize them with my man-muscles. However, this would not prevent, say, a Zidane headbutt to the shoulder. Would such actions still count as killing?

Mafia have to tap their victim with their hand. A target could physically prevent this. Please do not injure other players.

No humans were harmed in the production of this game

Solution: Alex handcuffs every player and throws away the key.