David Dudenhoefer, left, a right to work supporter, receives a thumbs down sign from a union worker during a rally in Lansing, Mich., Thursday, Dec. 6, 2012. Tensions rose at the Capitol late Wednesday afternoon when hundreds of union members packed into the rotunda area, blowing whistles and shouting slogans such as Union buster and Right to work has got to go. Senate Republicans introduced right-to-work legislation in the waning days of the legislative session as outnumbered Democrats pledged to resist the proposal and say rushing it through would poison the state's political atmosphere. (AP Photo/Carlos Osorio)
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