I believe the answer is: Similarity
According to the gestalt principles, individuals that possess similar objects in term of shapes or colour would be automatically perceived as being in the same group. In public setting such as soccer match, this help the audience distinguish one team with another.
I believe the answer is Dunning-Kruger effect
Dunnig-Kruger effect happens when <span> Someone with low ability suffer from illusory superiority,
This make them actually believe that they're actually better than other people even though they do not possess any actual achievement/proof to backed their perception.</span>
The process of curtailing the performance of dysfunctional behaviors by eliminating whatever is reinforcing the behaviors is extinction.
That people were supposedly being treated improperly
