The Southern Brotherhood is a large, Alabama-based white supremacist prison gang. Gang members use a variety of different symbols and tattoos but the most common is their "patch" or shield tattoo.
This tattoo consists of a shield emblem (often superimposed over axes or swords) divided into four sections, each with a different symbol inside. These symbols can include the letters SB, swastikas, SS lightning bolts, the number 23 (or 14/23), the Confederate flag, or other symbols.
Southern Brotherhood members often use the numeric symbol 14/23, a reference to the "14 Words" slogan ("We must secure the existence of our people and a future for white children") and the "23 Precepts" of the Southern Brotherhood.
Gang members sometimes use a handshake in which two people grip each other's forearms.