Orthodoxy is not a few people (correctly) arguing that we should STOP stating that black people are inferior. Furthermore, a Nazi who happens to be against a particular war is not "peaceful but unorthodox".
Charles Murray wasn't discussing human biodiversity at all. His talk was on an entirely different topic. No one argued against him at all. They merely disrupted his talk and then assaulted him and others.
The Nazi in question did not engage in any violent acts at that gathering. That makes him a peaceful protester.
That Murray was attacked during an unrelated talk is uncontested. My objection is that you referred to the defenders of centuries-old superstition as unorthodox simply because the cultural tide began to turn against them in the 20th century.
I agree that in some historical time, some of Murray's views might be considered orthodox. That doesn't make them orthodox today - nowadays he's subversive.
Only if we accept that racism is dead. To find proof to the contrary, we need only look to popular responses to videos of unarmed black men being killed by men with guns. And that's just scratching the surface.
That's a pretty misleading way to summarize Charles Murray, who is probably America's foremost exponent of the Just World Fallacy, having written extensively about why blacks, women, and just about every other minority are in whatever diminished circumstances they find themselves in due to intrinsic deficiencies. Particularly blacks.