PC: The Congo Free State discredits imperialism

How plausible is it that the Congo Free State would discredit direct imperialism? What circumstances would be needed for this to happen?
 
Well...considering they pushed the Congo Free State into a Belgian colony because it was originally the private property of King Leopold...

I don't think it did a very good job at discrediting anything.
 
I somehow doubt that the colonizing states would feel too many misgivings about horrific violence in itself. However, if attempts to keep the Free State in line were somehow to lead to violent revolution in Belgium itself, might imperialism come to be seen as simply dangerous?...
 
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