Answer:
Labeling is the theory.
Explanation:
Many people are stopped when they look like this because of labeling. Many are actually not bad people also.
So why does this happen?
Well, if you look at all the stereotypical bad guys and good guys in the movies and in history, they all look like this.
Rebellious
Conceited
Improper
So, its been engraved into everyone's minds that this is what bad guys look like. And sometimes, they are actually good people.
Therefore, the theory is called Labeling.
