I've seen this image shared a few times around the internet as an example of a LEGO instruction step that assembles pieces in such a way that they cannot be disassembled (at-least not without some serious strain on the parts).
If one were to insert that Technic axle into that hole, it would sit flush inside holding the other red piece in place, and since the black piece wraps around the back, it would not be possible to slide it off the axle without some substantial bending.
Trying to find the source of the image has proven difficult, and those who share it don't ever seem to include the source of the image.
Is this from a real LEGO set's instruction, or is it faked?