Glen Loury on why public unions are so wrong

Brink Lindsey also makes a superb point about how public employee unions basically are a statement that the democratic process can't be trusted to set the wages and working conditions for public employees.  Of course if that is true, then how can democracy set fair tax rates or regulate banks or do any other thing?  If the wages and working conditions of public employees need to be shielded from the democratic process, then why not the prices public utilities charge?  Or the business practices of Walmart?

I love our public servants - their logic is self refuting which makes them easy to argue against.