(The article, from the Associated Press, is also available at AZCentral.com.)
The idea is that a person's blood type tells a lot about his or her personality. But not only do these seemingly innocent beliefs have a very sinister history, but they also result in considerable grief when a person is denied a job, turned down for marriage, or slotted into a certain career path at school on the basis of his or her blood type.
At long last, scientists and other prominent figures are beginning to publicly attack this "blood-type discrimination" because of all the sorrow it has caused.
(By the way, registration at the New York Times website is required but free. That's a mellowness-enhancer!)