Derogatory meaning, a metaphor for the fall of one criminal, driving the exposure of another.

***The same crime, especially a major economic crime, is so intertwined that the existence of each criminal is conditioned by the others. To borrow the expression 'pulling out the radish brings out the mud', they are each other's radish and each other's mud. Under these circumstances, 'pulling out the radish brings out the mud' is inevitable."