An article in the New York Times on union organizing at a hog-killing plant had this interesting datum:
The union won by 2,041 votes to 1,879 after two years of turmoil at the plant. As a result of a federal crackdown on illegal immigrants, more than 1,500 Hispanic workers have left the plant. Its work force is now 60 percent black, up from around 20 percent two years ago.