Why would you want to know who the fascists are? If you do then that means you gave them power. In the US fascists not only have free speech protections, they have greater free speech rights than anyone on the left. They were given- through federal legislation- the power to control all media outlets. Fascists will never allow leftists to have a platform. Centrists will never allow it either. There is no practical reason at all for the left to defend free speech for Nazis, yet they continue to do so.