@LU: Another pitfalls of “boxes” is not just that the more you label things, the more difficult it is to think outside the box (and depending on which box you are referring to, thinking outside of it might not necessarily be a good thing!). A bigger issue is that that boxes can be illusory and misleading. This is because:
(A) People are complex and multi faceted enough that they cannot be defined in one word. And כשם שאין פרצופיהם דומין זל”ז כך אין דיעותיהן דומין זל”ז.
(B) People often portray themselves differently to different people. Your perception of a person or group comes from an extremely limited observational capacity, and often limited only to what s/he chooses to show you.
While there are advantages in being able to use “boxes” definitively, they are very limited, and you generally lose more than you gain.