Bad thing. Anytime you hire someone using criteria other than qualifications, you are doing a disservice to your customers.
Edit: Just a bit more. From the book "Economic Facts and Fallacies" by Thomas Sowell
"The percentage fo black families with incomes below the poverty line fell most sharply between 1940 and 1960, going from 87 percent to 47 percent over that span, before either the Civil Rights Act of 1964 or the Voting Rights Act of 1965 and well before the 1970s, when "affirmative action" evolved into humerical "goals" or "quotas". While the downward trend in poverty continued, the pace of that decline did not accelerate after these legal landmards but in fact slackened."
source for this section of the book is "Stephan Thernstrom and Abigail Thernsstrom, America in Black and White, p. 233
Another good source is the book "Stupid Black Men - How to Play the Race Card and Lose", by Larry Elder. (a black man)