From Rick [Email him]
Back in the late 1980s, early 1990s, at San Quentin prison, black guards would tie blue or red bandanas on their batons, indicating their gang affiliation, Red = Bloods, Blue = Crips. The Mexican guards didn`t show colors, but they hated the whites just as much as the black guards. The "white" guards didn`t do anything for the whites, but the colored guards, black and brown, all cut slack for their peeps.
Just as in the outside, whites don`t stick together and are quick to stab each other in the back.
The writer prefers to be anonymous.