● The symbol used by Einstürzende Neubauten is called the "Blixa Bargeld" or "EN" symbol, but more specifically it depicts a figure known as the "cave man" or "man in a house" — a stick
figure standing inside a triangular/peaked roof shape, resembling a person inside a collapsing building (fitting the band's name, which translates to "Collapsing New Buildings").
However, looking at it through the lens of what we've been discussing — it bears a notable resemblance to the squatter man petroglyph form. The figure is a stylized humanoid with outstretched limbs inside a geometric frame, visually similar to the Peratt instability figures found in rock art worldwide.
Whether Blixa Bargeld and the band intentionally drew from ancient petroglyph imagery or arrived at the form independently is another question. The symbol was designed in the early 1980s Berlin industrial scene, where interest in primal/archaic imagery was common. But the structural similarity to the squatter man archetype is hard to ignore once you've seen the connection.