Are we talking here about "toxic geeks/fanboys"?
I don't like when the speculative fiction and the RPGs are used like propaganda weapon, for example Castilla and the inquisition in "7th Sea", bul also I have seen some pieces of social darwinism in some titles of World of Darkness by White Wolf. I don't like when those monster characters share ideas by Nietzsche about the Übermensch and the christianity as a ethic of slaves. In the cinema other examples of propaganda war are the serie "the handmaid's tale" or the movie of Assassin's Creed with a part of the plot set in the reconquest of Granada (they don't tell you Muslims started that war, and there was a civil war between the king Muley Hacen and his son the prince Boabdil the little).
We don't like to find stupid supremacists in the geek community, but reporting it isn't enough. The spirit of the RPGs is about how different people learn to work together. D&D has got lot of stories about conflicts between dwarfs and elves, or other races, but those racist predjudices are defeated when the characters learn about the good things by the other people.
If we want good vibes in the RPG community we have to do more things, not only reporting homophobic or xenophobia is wrong. We have to defend the respect of the human dignity, or we will become villains like Magneto, the archenemy of the X-men, or like in the saga of the planet of the apes where the former slaves are the new tyrants. And we should take care because when the fiction is used to promote certain ideas, the people could react. For example we could see in the future cyberpunk stories no to report abuses by megacorporations but against the wolves in sheep's clothings who defend the keynesian economy and the control of the market by the politicians.