That happened during a time when many extremists didn't feel comfortable being openly racist, unlike now. Much has changed in a few short years, in a very bad way. Then and now, intimidation is a primary objective. Putting racist leaflets at a trailhead in a busy town accomplished that. Lots of precedence for similar events. Not sure why you are skeptical. Perhaps because it doesn't advance your or many of the other MAGA's here narrative.