The Political Economy of Government Employee Unions..

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Every government-employee union is a political machine that lobbies relentlessly for higher taxes, increased government spending, more featherbedding, and more pension promises – while demonizing hesitant taxpayers as uncaring enemies of children, the elderly, and the poor (who are purportedly "served" by the government bureaucrats the unions represent).
-Thomas DiLorenzo

http://www.lewrockwell.com/dilorenzo/dilorenzo203.html