Catfish

I believe that "catfish" are a necessity for people to stay alert and focused, because otherwise we would get complacent. While the term means someone who pretends to be someone else I also believe the quote they have at the movie also relates to things that motivate us to not get complacent. Like some people may have kids and their kids drive them to always get better and do better for the kids. I believe the urban dictionary word catfish means things that may drive us to get things done that we would otherwise push away and not complete.
In my life I believe that the catfish in my life is not someone but things like school academically, in sports competitively, and friends. Without these things I may get complacent and not strive to accomplish goals or even set goals for that matter. This brings me to this point, that catfish whether it is a person or an idea/thought, it causes people to set goals and always strive to be accomplished.
So yes, catfish are a necessity for people because without it/them people may not set goals for themselves or be focused.

Response

The article on how people responded to the split second the receive to determined whether the person was a hostile with a weapon. But it was found out that people responded faster to the black people while most of them didn't even have weapons at all, but the white ones didn't get shot as fast.
The article on how the Jew's were dominating the basketball world with their god given balance and speed. This was until 1950's when blacks entered the sport where then the blacks dominated to present day.
The next article was about how someone wrote an article about an Korean basketball play got acknowledge for how he was good at basketball. But the article said Korean basketball player instead of just his name. Which this relates to the stereotype that Asians are not as good as others do, such as blacks and whites.