Enmodo ⇇If you judge a whole group by their worst Internet trolls that's Nutpicking: cherry-picking the most extreme voices to represent everyone. It's also a Hasty Generalization: jumping to conclusions about millions based on a tiny, loud Internet subculture. #Logic #Fallacies
Arguing with an Internet stereotype? If you ignore someone's actual points to attack a fake "edgelord" caricature, that's a Straw Man. Assuming a person has those traits just because they belong to a group is the Ecological Fallacy. Argue the point, not the trope. #CriticalThinking
Those four fallacies are exactly what comprise Reddit Atheist Derangement Syndrome afflicting folk who just cannot help mentioning Reddit and atheist in the same sentence. They write off the lives of one to two billion people worldwide because of a small and vocal few trolls among them.