Supreme White Alliance
Supreme White Alliance was a hardcore racist skinhead gang based primarily in the Midwest until it died out in the late 2010s. The gang used 43 as a numeric symbol because the alphanumeric equivalents of the gang's initials (19 for S, 23 for W, and 1 for A), when added together, equals 43. Members also used a two-handed hand sign in which four fingers from one hand and three fingers from the other hand are used to represent the number 43.