[xynljlpz] Nazi Nazi Nazi Nazi nazi nazi Nazi Nazi.

A sentence with similar structure as with repeated "buffalo".  "Nazi" as an adjective is common.  We use "nazi" as a verb to mean "act in the way of a Nazi toward" (this is an example of "Verbing weirds language.").  Finally we use "Nazi" as a plural or collective noun (again unusual compared to the more usual pluralization "Nazis"): perhaps the mind is fooled into believing Nazi is a Latin-style pluralization of something like Nazus or Naz.

The sentence does have useful semantic meaning: white nationalist groups fight amongst themselves (perhaps a strategy ultimately to prevent any from gaining significant power).