"Harvesting" or "Harm-vesting"? Can consulting firms damage the economy, and hurt the middle class?

I like to think that Management Consulting is a religion, an art, a science, a passion. Consultants have the potential to do good work - great work, actually. But there can be positives and negatives, in any industry. Check out some links below that mention how consultants potentially can do harm:

Some interesting links:

• http://www.huffingtonpost.com/rj-eskow/was-mitts-harvest-talk-ju_b_1924164.html
• http://www.motherjones.com/politics/2012/09/1985-romney-bain-harvest-firms-profits-video
• http://www.alternet.org/election-2012/sick-money-how-mitt-romneys-bain-investments-are-exploding-deficit-and-harming-our?paging=off