B*rdfinn on reddit is properly crazy. He/she calls literally EVERYONE a Nazi and fascist (that user also talked about how the founder of removeddit was a Nazi). I'm not accusing that user of doing this, but the person (s) behind this attack likely have a similarly unhinged personality. Because to do something, you need to believe that you are vastly morally superior to those you are trying to silence. Your average leftist/progressive/liberal/what have you, won't do all this. It needs a really special type of person. Once you label the opposition a Nazi and yourself an ally then you get a huge sense of moral superiority.