Answer:
In the scene where Luis was asked to remove his shirt, he was being racially profiled. The officer assumed that he was in a gang because of his race. The officer had an attitude of self- righteousness, assuming that he was correct in his assumption without any further information on the boy.
Explanation:
Okay, so I'm this is the answer that I came up with, because the officer had pictures up on the board of other Hispanics who actually WERE in gangs, and grouped Luis with them.
Oh and I think you're in my Spanish class, lol