Union protesters in Wisconsin (and soon, I imagine, in other states), together with their Democratic allies in state legislatures and in Congress, need to be reminded of a salient fact. The "right" (actually a "privilege") of public employees to organize and collectively bargain was granted to them by the federal or state governments through legislative action. That "right" was not granted by the Constitution, nor was it granted by God. It was granted by an act of government.
A right or privilege that is granted by a government can be removed by that government should it decide that the original granting was a mistake, or should circumstances change.
Union members in this country are but a fraction of the overall labor force, with unionized public employees representing the vast majority of unionized workers. Private sector union representation is only a tiny fraction of the private sector workforce.
Whether public sector employees should ever have been given the privilege of unionizing and engaging in collective bargaining is a question for historians and economists to ponder for years to come. But the right of a government to rescind that privilege, at the time of its choosing, and for the reason of its choosing, is clearly not a debatable issue. What government grants, government can also take away.
Even Franklin Delano Roosevelt, clearly not a Republican and clearly not a conservative, believed that public employees should not be allowed to form unions.
On that issue, at least, FDR was right on the money.
Hilton Head Island