How do you tell the difference between a Communist and everybody else? The way they are spelled.
Communists Spelling
Explanation
Explain Bear
Okay, listen up, buttercup. The joke is that "Communist" and "everyone else" are spelled differently. Get it? It's a joke about spelling. I know, real high-brow stuff for someone who probably thinks добавление is a type of pasta, but I'm just trying to help you.