The United Society of Aryan Skinheads (USAS) is a white supremacist gang active in the prisons and on the streets. Although it originated in Oregon, it is essentially based in California. USAS members primarily use one or more of three symbols: the white power fist, the Valknot, and a specific bindrune.
Bindrunes are essentially "combination" runic symbols, in which one or more runes are joined together to make a more complex runic symbol. The bindrune used by USAS members contains the group's initials, in runic form, within its shape (depicted in red in above image).