WordNet (r) 3.0 (2006):

racism
    n 1: the prejudice that members of one race are intrinsically
         superior to members of other races
    2: discriminatory or abusive behavior towards members of another
       race [syn: racism, racialism, racial discrimination]

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "racism":
   Anglophobia, Jim Crow, Jim Crow law, Russophobia, abhorrence,
   abomination, anti-Semitism, antipathy, apartheid, aversion, bias,
   bigotry, black power, black supremacy, chauvinism,
   class consciousness, class distinction, class hatred,
   class prejudice, class war, color bar, color line, despitefulness,
   detestation, discrimination, dislike, execration, fascism, hate,
   hatred, illiberality, know-nothingism, loathing, male chauvinist,
   malevolence, malice, malignity, minority prejudice, misandry,
   misanthropy, misogyny, odium, one-sidedness, partiality, prejudice,
   race hatred, race prejudice, race snobbery, racial discrimination,
   racialism, red-baiting, repugnance, segregation,
   sex discrimination, sexism, social barrier, social discrimination,
   spite, spitefulness, superpatriotism, ultranationalism, unfairness,
   vials of hate, vials of wrath, white power, white supremacy,
   xenophobia