The Ultra Boys said in a statement: "The transfer window carried out so far proves to the point of absurdity that Racing is no longer a club that makes decisions in its own interest. On the contrary, we are witnessing a headlong rush where Chelsea is calling the shots to the detriment of our club's independence.
"The problem with timeshare ownership is profound; it's a destructive logic that transforms historic clubs into interchangeable parts of a globalized portfolio, and this system is becoming widespread. Our legislators must quickly address this issue to put an end to the abuses it causes.
"We have always defended a deeply rooted, grassroots football, driven by vibrant stands and a unique history. Today, they are trying to impose a model on us where clubs are run like fast-food franchises. The current good results must not blind us or interfere in our fight, which goes far beyond the culture of the moment and short-term visions of what Racing offers on the pitch.
"What is happening within our club is too serious for us to pretend that everything is fine in the face of authentic football, which is dying. We will continue to denounce all the excesses of timeshare ownership and interference in our club."