Check out Arnold Kling's response to the Maryland Wal-Mart law...TCS Daily - Liberals Should Know Better.
Here's the 2nd paragraph - it hit's close to home for me with my friends in UU-land:
Most of my friends are liberals. This series is the conversation I wish that I could have with them. I wish they would let me finish my train of thought before
interrupting. I wish that they would consider my arguments, rather than try to bury them in rhetorical put-downs.
Don't worry, it's not an attack on 'liberals'... it deals with the unintended consequences of government meddling in market (in this case, the labor market) dynamics.