I think a healthy economy needs a good balance between management and labor. Unions are part of that equation. There was a very good article in yesterday's New York Times that showed statistics on how the U.S. economy grew at a faster rate when this balance existed.
Yes, some union leaders make dumb ass comments, but some CEOs do the same and also make dumb ass decisions that put jobs and companies in jeopardy. I have no problem with people like Steve Jobs, Michael Dell and Richard Branson making huge amounts of money. They built companies and industries. I do have a problem with many CEOs who simply inherit a going concern, hold the seat for several years, and leave as multi-millionaires without having done much more than keep the place going.
And by the way - I'm part of management and work for a heavily unionized company.
Happy Labor Day!