Here are a few examples:
* Red: This is a common, if somewhat dated, slang term for communist. It comes from the color of the flag of the Soviet Union and other communist countries.
* Commie: This is a shortened, more informal version of "communist" and is often used in a derogatory way.
* Pinko: This term is used to describe someone who is considered to be leaning towards communism or socialist ideals, but not necessarily a full-fledged communist. It carries a similar level of negativity as "commie."
It's important to remember that these terms can be hurtful and should be used with extreme caution. Instead of relying on slang, it's generally more respectful to use the terms "communist" or "socialist" directly.