The number 12 is a numerical symbol used by racist prison gangs associated with the so-called Aryan Race or White Brotherhood (as are the numbers 1 and 2 individually), particularly the Aryan Brotherhood of Texas.
Using number-to-letter substitution, 12 corresponds to AB, representing Aryan Brotherhood. Sometimes the number 12 is written using Roman numerals, as I and II or XII. Several variations have developed from this basic numerical symbol, including 112% for “100% Aryan Brotherhood,” 126 for “Aryan Brotherhood Forever,” and 1-2-20 for “Aryan Brotherhood of Texas.”
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