To reason that all beings are inherently racist is beyond the scope of credibility. Before the development of transportation, it was virtually impossible for different racial groups to have interacted. Thus it can be construed that it is not plausible that the human lineage, through evolution, acclimatised an intuitive and inherent response to individuals of different racial groups.
Nevertheless, individuals who choose to contest that racism is indeed inherent have made every effort to bolster their outlook with suggestions that racism is biological in origin. Even so, the correlation between psychological responses and biological relations do not tell us whether the responses are categorically innate.