Something to keep in mind about the current hullabaloo in Wisconsin is the significantly higher compensation public employees receive compared to those with similar jobs in the private sector. You can read about it here. This is not often reported.
Another thing that is not often reported is that Governor Walker is not proposing doing away with collective bargaining altogether (although I would be in favor of that), but only collective bargaining for pension benefits and health insurance. Under the Governor's plan public employee unions will still be able to bargain collectively for base salary.
I admire the governor's courage. Godspeed to him!