US public opinion about trade unions sharply polarised

Today is Labor Day in the US - a celebration of union organisation and working people first held in 1882. A New York Times opinion survey shows sharply polarised opinions in the US about trade unions - a slim majority of Americans, 52 percent, approve of unions and the difference in views between how Democrats and Republicans feel toward unions has reached record levels: http://economix.blogs.nytimes.com/2011/09/02/a-challenge-for-unions-in-public-opinion/