300 years after the revolution people who talk about 'communism' will be using your definition. For now when people say 'communism' they're talking about the ML(M) project of achieving that goal. This is a conversation that's been going on for 150 years now. Not only have people argued out what you're talking about, they've been able to see in real life what happens when you try to put principle to practice. You can't have communism without class war. And if you don't suppress the ruling class they will inevitably erode and destroy whatever victories you take from them. You have to use 'authority'.