I didn’t say it. Although he did.

Where? Here, maybe, where he ridicules the people who think the Nazis were socialists?

Wie oft haben wir uns geschüttelt vor Lachen über diese einfältigen bürgerlichen Angsthasen, angesichts des geistvollen Rätselratens über unsere Herkunft, unsere Absichten und unser Ziel. Wir haben die rote Farbe unserer Plakate nach genauem und gründlichem Überlegen gewählt, um dadurch die linke Seite zu reizen, zur Empörung zu bringen und sie zu verleiten, in unsere Versammlungen zu kommen, wenn auch nur, um sie zu sprengen, damit wir auf diese Weise überhaupt mit den Leuten reden konnten.

Where?

In this chapter, for example

Btw are bolsheviks communists? Bc they clearly stated they are. No need to even read between the lines.

They stated that as their goal. The Nazis stated a Reich enuring 1000 years as their goal. Did those succeed?

And what’s the relation between capitalism and slavery?

They're compatible.

The point is that socialists can be socialists without applying Marx works in any way.

Name one socialist that came after Marx that doesn't agree with him in some manner or the other.

What worldview? What is my worldview?

Please, enlighten me. I could do with a bit of absurd fantasy worldbuilding.