Someone who thinks of themselves as "
woke", the phrase originating from the 1999 movie "The Matrix".
People who use this term to describe themselves think that being a "red pill" is being someone who is fighting "the system" in a war, thinking that they're warriors of
Truth.
People who use this term to describe others use it derogatorily, because in the Matrix, the Oracle states that she created the red pill and the "
real world" because certain people were fundamentally unable to get along with system. So, she created the red pill in order to give something to do to the people who simply don't want to get along with others.
Being a red pill doesn't mean fighting for
truth, being a red pill simply means being the kind of person who needs to fight others in order to feel fulfilled. The choice was not
truth over
lies, the choice was simply whether or not you "feel a need", as Morpheus effectively put it, to fight.