I've also noticed some strange behavior based on those types of keywords on Facebook as well, but there is something more than just the keyword itself. I believ

I've also noticed some strange behavior based on those types of keywords on Facebook as well, but there is something more than just the keyword itself. I believe there there is some sort of user reputation rating or other algorithmic factor (or maybe even their own friends reporting the content) -- because certain people on my feed get demoted faster than others. Unfortunately unless the algorithm is disclosed to the public (IMO it should) nobody will know with certainty.