"No true Scotsman or 'appeal to purity' is an informal fallacy in which one attempts to protect a universal generalization from counterexamples by changing the definition in an ad hoc fashion to exclude the counterexample."

In other words, as we have seen with Communist and Socialist apologists all across the West, every example of a Socialist or Communist state or leader always inevitably gets explained away as not being or having been "true" Socialism or Communism- Marxism in short.

This ongoing fallacious thinking about whether or not Socialism "can work" needs to stop. Traditionally, this mode of fallacious thinking has been labeled the "No True Scotsman" logical fallacy. For the purposes of the modern age, I believe it should be renamed to the "No True Marxist" or "No True Socialist" logical fallacy.