markpud
Former Ascifi.com mod
I have a vague memory of Kirkman addressing this, and saying that while they weren't intentionally killing black male characters off, they'd pay more attention to diversity of casting. Hence Bob being "converted" from an older white guy in the comics, and perhaps stretching to the casting of Noah.. But Bob and Tyreese being killed not long after Noah and Gabriel's introduction has stirred this up again!