>Scott Adams has claimed that during his early corporate career, he was explicitly told by his managers that he would not be promoted because companies were prioritizing minorities. According to Adams, while working at Crocker National Bank in San Francisco, his boss told him that "Whites could not be promoted." He then moved to Pacific Bell, where he says his boss told him directly, "you can’t be promoted because you’re White and you’re male"
I'm not sure him having been discriminated against makes all his office humor suspect.
That's nice, and it might even be relevant in a discussion where someone said that his claim to have been discriminated against made all his office humor suspect, rather than that it was a key turning point in his own narrative of how he came to make it.