And they want to run the country - a continuing series

A new study estimates that the Democratic National Convention will cost Boston over $20 million in lost productivity and other costs.

The convention, scheduled for the week of July 25, was hailed by Mayor Thomas M. Menino's office as a boon to Boston, reaping millions of dollars in economic gains. But the Beacon Hill Institute determined that transportation and other costs will outweigh the benefits of 35,000 convention delegates and visitors who will converge on Boston's hotels, restaurants, and attractions.

Gives a whole new meaning to “we’re from the government and we’re here to help.”