Voidists are all of the bad people in this world. The Kool Kid Fortniters, the Bullies, the Racists, the Fascists, etc. "Wait a second!" you might be asking. "Did you just group Fortniters with Fascists?" Well, there are different levels of Voidism. Like these:
Monomal voidsts are annoying, but harmless. They are the Fortniters, the dabbers, the Prehexcogenkromals (below 6th grade in mental age), etc. They ruin good memes, but all there is to do is shun them. You can kill one mosquito, but you can't kill all mosquitoes. It's just a fact of life. Anyways, Monomalosity is a culture.
Midomal voidists are dangerous. They are the bullies, the casual racists, the internet trolls, etc. They are evil, but not evil. Alone they do nothing, but together they can cause great damage to society. Stay wary of these.
Dimal voidists are Midomal voidists in positions of power. They are the fascists, the... well, that's it. Stalin -- Dimal. Hitler -- Dimal. Mussolini -- Dimal. These are the voidists that really cause death. You could even say that some U.S. presidents are Dimal! What could be worse than Dimal?
Evil is not a normal part of human nature. Bin Gu and Qinyi Du created humans as benevolent creatures. So how is there evil in the world? Ennists. Ennists, long ago, created a cult worshipping En, the Great Wheel. Some say En is a manifestation of the Tenth Major Arcane Horror, others say that it is the shadow of Binqinyi Dugu, but whatever it is gave dark visions of of power and glory to those who worshiped it. They went and created a cult, justifying evil with separation. The Ennists created a rigid caste system by withholding information between levels. Dehumanization was used to commit acts of violence. Knowledge of En has mostly died out, and the caste system has morphed into the ranks of voidism. But the thing that has most permeated our psyche is Dehumanization. All of us, at one point or another, has committed this Ennist act. Dehumanization is how evil is committed.