Thurgood Marshall, Furman v. Georgia — Concurring Opinion…
“ For example, if the evidence clearly demonstrated that capital punishment served valid legislative purposes, such punishment would, nevertheless, be unconstitutional if citizens found it to be morally unacceptable. A general abhorrence on the part of the public would, in effect, equate a modern punishment with those barred since the adoption of the Eighth Amendment. There are no prior cases in this Court striking down a penalty on this ground, but the very notion of changing values requires that we recognize its existence. ”
