#OTD #TDIH #June21, 1915: #SCOTUS rules in #GuinnVUnitedStates that the #GrandfatherClauseLegislation in #Oklahoma denying #BlackSuffrage is #unconstitutional.
#AfricanAmericanSuffrage #15thAmendmentToTheUSConstitution #CivilRights #AfricanAmericanCivilRights
en.wikipedia.org/wiki/Guinn_v...