Fascist <= Liberal => Communist
In this current world, as the situation has become, every body is born almost fascist then some education turns them into liberals that are always susceptible to fascism again whenever the state want. When liberals start educating themselves more they start seeing the truth and lies and perils of current system. And when they are exposed to left they accept it as the only alternative.
Those people (if they are not bots) that you are facing on reddit or any other plateform bashing communism are either paid trolls or fascists that must be laughing when called a liberal.
I may be wrong but this take is from my experiences these days. You're more then welcome to correct.