Those not well-versed with The Walking Dead could easily see a sinister context to the shirt, and Morgan’s retort seems far from understanding of that.
AMC had no comment on the matter, but was the shirt worth pulling off of shelves?
The scene itself isn’t given significant racial undertone (ironically, Negan resists killing Korean-American Glenn to avoid the appearance of racism), but it’s certainly plausible The Walking Dead might have missed some racial insensitivity in its zeal to market the character.