This behavior reveals a sort of honor among thieves. Criticisms from outside are usually dismissed as the work of crackpots, incorrigibles or mean spirits, or denounced as evidence of a scheme devised by a subversive conspiracy. This is predictable so be prepared. However, politicians may be wholly unprepared to face disparagement, disdain or derision when it is dispassionately connected with their chosen profession in the game of politics. Impersonal admonitions that leave no doubt of the connections with racketeering are most effective, especially if expressed in shocking or humorous language.
Political cartoons can have the greatest impact on politicians.
Invective and obscenity may have its only justification in the language when used in this context. This is about the only thing the Berkeley 'free-speech' movement accomplished. George Santayana observed that humor consists in the perception of the absurdities contained in the illusions upheld in conventional wisdom. So shall humor that comes from disillusionment play an important role in the growth of human wisdom to the point where it can cope successfully with the political menace. Show good-natured contempt, not abrasive confrontation.