Notice the only "racists" they are targetting are White:

Brain Scan Roots Out Racists

Abrain scan to identify racists? But how do we get the suspected racists to submit to scanning? And what do we do with the racists once we identify them? None of it made sense until the Dowbrigade noticed that the institution hosting this racist research was none other than the Ivy League’s Dartmouth College, which is located waaay up in the wilds of New Hampshire, where the magnificent isolation obviously inspires them to groundbreaking research like this. Any inside dirt, Lisa Chau?

A brain scan that can apparently root out racists has been developed by scientists.

The technique was used on white volunteers shown photographs of black
individuals. In those with racist tendencies, a surge of activity was seen in part of the brain that controls thoughts and behaviour.

After interacting with real black individuals, the same group performed poorly in a task designed to test mental resources. The American researchers concluded that harbouring racial prejudice, even unintentionally, stirred up an inner struggle that exhausted the brain.

Dr Jennifer Richeson, assistant professor of psychological and brain sciences at Dartmouth College, Hanover, New Hampshire, said: "We
were surprised to find brain activity in response to faces of black individuals predicted how research participants performed on cognitive tasks after actual interracial interactions."

http://blogs.law.harvard.edu/dowbrigade/2003/11/16/brain-scan-roots-out-racists/