Most thugs that make the news are black.
That doesn't mean that "thug" says anything about the person's race.
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Actually, it does. We don't get to create our own definitions on a technicality. The common usage of "thug" describes a young black man. The word has had different usages in the past, but that doesn't change the present.
And more to the point here, that doesn't change Derec's usage of the word - which has been applied by Derec only to young black men 40 out the last 43 times.
Given Derec's posting history, I am not the least bit surprised that someone here assumed that Derec was making racist assumptions.