Prejudice, we all have seen, heard, or felt it. Certain stereotypes exist due to the differences in how one dresses, or the color of our skin, hair, and/or eyes.
An Implicit Association Test (IAT) on the Harvard website (Try it out yourself!) is known for its ability to measure one's implicit cognitions such as attitude and stereotypes. (Greenwald et. al 1998) Or does it? The test has shown that the most people (all races alike) tend to show association of white Caucasians with good whereas African Americans were associated with bad. Does this mean all the people who have taken the test are racist?
A study done in 2009 regards to IAT has shown varied results throughout different cultures (Andrew C. H. Szeto, 2009). This seems to suggest that the IAT may measure the culture views on different stereotypes. For example a student who grew up watching different movies that portray a Caucasian male as protagonist and an African American male as antagonist will associate them to good and bad respectively, or vice versa.
This evidence suggests that the test seems to measure the cultural views on which the test taker was grown in not their personal views or prejudice towards another race.
Bibliography
Andrew C. H. Szeto, R. M. (2009). Using the Implicit Association Test across Cultures: A Case of Implicit Self-esteem in Japan and Canada. Asian Journal of Social Psychology , 12 (3), 211-220.
Greenwald, A. G., McGhee, D.E., & Schwartz, J. L. K. (1998). Measuring individual differences in implicit cognition: The Implicit Association Test. Journal of Personality and Social Psychology, 74, 1464-1480.

I also believe that what you see in other people is affected by your culture and how your grew up.