Poll data showed that African Americans perceived more racism in the response to Hurricane Katrina than did White Americans. In this article, we consider claims about racism in Katrina-related events in light of (a) our program of experimental research on group differences in perception of racism and (b) the meta-theoretical perspective of Liberation Psychology (LP). First, this analysis suggests that White Americans may perceive less racism in the Katrina disaster because they are less likely than African Americans to know about historically documented acts of past racism (e.g., following the Mississippi flood of 1927). Second, group differences may arise because African Americans and White Americans face divergent motivations regarding perception of racism. Whereas African Americans may have motivations to be vigilant for the possibility of racism, White Americans may be motivated to deny racism because it constitutes a threat to social identity and to the legitimacy of the status quo.