US Interior Secretary Stewart Udall details members who are "Negrophobes" among his reasons for disaffection from the Church.
Stewart Udall, "Conscience of a Jack Mormon 1947," accessed December 16, 2022
[Udall lists fourteen reasons why he "cannot be a practicing Mormon in full fellowship," as excerpted below.]
9) The believers view themselves self-righteously, and society complacently ; their obsession with personal piety too often is a form of social impiety ;
10) Fellowship is made difficult because too many of members find it easy to be ^simultaneously devout Mormons and devout anti-Semites, lovers of their fellowmen in public and Negrophobes in private ;
11) It is a dangerous half-truth to say, as the Church has said, that if we change the individual we will of necessity change the social order -- more dangerous yet when its companion half-truth is forgotten and unspoken ;