[kentrado]

No true Scotsman is only a fallacy when you are never given a definition of what a true Scotsman is. That's when the fallacy appears. When the person saying it can always retreat to an ambiguous never stated definition. He won't tell you what a real Scotsman is, but he will have the authority to tell you any examples you show him are not it.

For communism and socialism you are given the definition time and time again but people in your position always choose to ignore it and repeat the no true Scotsman meme.

I can tell you the definition, in exchange of you not using that meme anymore. Sounds fair?