Vio-lence is an American thrash metal band formed in 1985 in the San Francisco Bay Area. Throughout its existence, they released demo tapes, one EP and three studio albums. Vio-lence is best-known for their association with the 1980s Bay Area thrash metal scene, and often credited as one of the leading lights of the second wave of the genre, along with Pantera, Sepultura, Sacred Reich, Dark Angel, Annihilator and Flotsam and Jetsam as well as their Bay Area counterparts Testament, Death Angel and Forbidden. The band has also been referred to as one of the so-called "Big Six of Bay Area thrash metal", alongside Exodus, Testament, Death Angel, Lȧȧz Rockit and Forbidden.

Vio-lence's most stable line-up was Phil Demmel and Robb Flynn on guitars, Deen Dell on bass, Perry Strickland on drums and Sean Killian on vocals; this lineup recorded all three of their studio albums–Eternal Nightmare (1988), Oppressing the Masses (1990) and Nothing to Gain (1993). After breaking up in 1994 and reforming for occasional live performances from 2001 to 2003, the band reunited once again in January 2019, and released the EP Let the World Burn, their first collection of new material in nearly three decades, in March 2022. The current lineup of Vio-lence includes Demmel and Killian, in addition to bassist Christian Olde Wolbers as the replacement of Dell.

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