Seems to me most people adhere to, & are more comfortable with, the appearance, customs, & life-style of their own racial/culural group than they do to those characteristics of others. Is that racism?  I think semantics is in play here, as it is in most debates. People are programmed to react to others based on behavior they have experienced in the past. Behavior more common to some groups than others lead to the inevitability of expectations of that behavior .... which may appear to be prejudicial racism. 

Absolute objectivity is too much to expect in everyday interactions between people, let alone in emergency situations.