What is the test for finding a prison official to be liable for failing to protect an inmate from violence?

Under the Eighth Amendment, prison officials have a duty to protect prisoners from violence at the hands of other prisoners. Farmer v. Brennan, 511 U.S. 825, 833 (1994). To establish a violation of this duty, the prisoner must establish that prison officials were deliberately indifferent to a serious threat to the inmate's safety. Id. at 834.

"'Deliberate indifference' has both subjective and objective components." Labatad v. Corr. Corp. of Am., 714 F.3d 1155, 1160 (9th Cir. 2013). The prisoner must show that "the official [knew] of and disregard[ed] an excessive risk to inmate ... safety; the official must both be aware of facts from which the inference could be drawn that a substantial risk of serious harm exists, and [the official] must also draw the inference." Farmer, 511 U.S. at 837.

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