Mafia
The general theory behind the mafia (whether fictional or non-fictional) is that most mafia’s in some form or another revolve heavily around the theory of respect. Where the hired men and lower one’s in the family are set to show “respect” to the godfather. [4][5][6]
Military
As a sign of respect in almost any form of military, you have the Salute. Salute is used to show respect to fellow officer’s of higher ranking. Each branch of the military generally has a different type of salute. [7][8][9] The 21 gun salute (done within the military for funerals of military members and other officers) is a very “respect” based procedure