There's a lot of nuance here. I know Chris initially mentioned left v right. Chaykin from all I know is not a latter day Frank Miller, he's pretty liberal in his politics.
There's the label, this is not a 'black man' as in an African American, it's a non-white man from the Asian subcontinent. The term 'Paki' has a much bigger negative connotation in the UK, it is pretty much up there with the n-word. Alex Di Campi although she's American has spent several years living in London, Chaykin has not, they may have very different takes on the implications of that label. We've mentioned this many times before here that it is difficult to apply the same standards globally, politics and demographics and sensitivities differ. The 'lynching' image has more resonance in the US as that has not traditionally happened to south Asians.
Personally I'm not big on censorship of sympathetic minds even if they are misguided. I don't think anyone believes Chaykin thinks that lynching Pakistanis is a good idea. It should always be taken in that context that it is not a malicious piece. That doesn't mean it is right and as I am not in that ethnic group I don't have a say in how offended anyone should be but we need to make sure we spend the most time condemning the deliberately bigoted and assist those with the right motives but bad execution of them.