The factors that come into play. . .
Long story short, an index about tropes in which something or someone isn't afforded the same rights and considerations that similar entities get despite deserving them for some reason or another.
If you're looking for tropes involving creatures (almost always humans
) having arbitrary and demeaning standards inflicted on them, see Double Standard
. This is for critters that don't have them in the first place, because they're beneath consideration.