>What if the ideas are unethical?
Propositional claims, in and of themselves, cannot be unethical. It's just a category error.
Now, if you're talking about the propositional claim, "black people are genetically inferior", well, as far as I know, it's contradicted by reams of available evidence and supported by little to none. You might as well claim the moon landings were faked, and, I suppose, many racists probably also do claim that one.
I do think there's a difference, so to speak, between heresy and quackery, and if we're treating racism as heresy, we've arrived to a very worrying place. The problem is, we treat ideas as heresy when we don't think we can actually provide evidence against them. That's why the whole notion originates with the unprovable realm of religion.
Claims like the supposed "inferiority" of some groups of people, on the other hand, were, at least as I was taught, quackery. They're just wrong, and all you have to do is point at the contradictory state of affairs in the real world.
A quack you ignore because you can prove they're wrong. A heretic you burn because you're secretly worried they're right.
Which makes me wonder how many secret racists we have around those pyres burning racists and sexists.
>Maybe we need to decide if being ultra-wealthy is moral when people are in need and there is a system in place that generates people in need.
This sorta idea? https://www.currentaffairs.org/2017/06/its-basically-just-im...