When experts talk about WS involvement in a hobby or activity, some people reflexively roll their eyes. They know non-racists who do it, ergo the experts are wrong.
Yet WS engage in hobby, career, and fandom communities like anyone else. In those spaces they typically keep their beliefs quiet until they find people who might agree with them or be open to persuasion. If they feel safe enough, the WS may evangelize in that space. Often gradually and in secret.
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@AllisonBetus: Yeah, that's pretty much how many religious and ideological types recruit. "Be relatable and sympathetic, gain trust, and then bring'em in." Classic.