This is a cheap way to buy "token minority positions" and increase the appearance of diversity.

Its a smart, if somewhat cynical move.

http://www.theatlantic.com/business/archive/2013/11/the-work...

"Blacks, who make up just 11 percent of the workforce, account for more than a third of home health aides and about 25 percent of both security guards and bus drivers—rather low paying jobs."