Is there any case law supporting a claim that prison administrators indifference to brutal behavior by guards toward inmates is sufficient to constitute an Eighth Amendment claim?

denied, 490 U.S. 1012 (1989) ("prison administrators' indifference to brutal behavior by guards toward inmates [is] sufficient to state an Eighth Amendment claim"). As courts have succinctly observed, "[p]ersons are sent to prison as punishment, not for punishment." Gordon v. Faber, 800 F.Supp. 797, 800 (N.D.Iowa 1992) (citation omitted), aff'd 973 F.2d 686 (8th Cir.1992). "Being violently assaulted in prison is simply not 'part of the penalty that criminal offenders pay for their offenses against society.'" Farmer, 511 U.S. at 834(quoting Rhodes, 452 U.S. at 347).