(n.) Snobbery.

Jim Crow airs alien apartheid arrogance clannishness clanship cliqueyness cliquishness cliquism color bar contempt contemptuousness contumely denominationalism despite disdain disdainfulness disparagement division esprit de corps ethnocentricity ethnocentrism faction factionalism foreigner hauteur insularity insulation insult isolation know-nothingism narrowness out-group outcast outsider parochialism partiality partisanism partisanship party spirit persona non grata quarantine race hatred racial segregation ridicule scorn scornfulness seclusion seclusiveness sectarianism sectionalism segregation selectiveness selectivity selectness separation sniffiness snobbery snobbishness snobbism snootiness snottiness sovereign contempt stranger superciliousness tightness toploftiness xenophobia