Support for the KKK and for neo-nazis, is, in fact, a political position. Is it "biased" to oppose the KKK's political goals? I don't think it's biased in any bad sense of the term, but it's definitely biased. (As is favoring un-prohibited access to regenerative medicine; freedom of speech; due process of law; etc.)

In fact, I could probably come up with objectively good, more right, and Less Wrong arguments for why I believe my bias is legitimate. This should be our sole concern: legitimacy, with reference to reality. I could include anecdotal information that would be seen as "less legitimate" and systemic information with millions of data points that would be seen as "more legitimate." None of that would effect the legitimacy of the argument itself, in an objective sense.

All bad politics destroys, harms, kills. It's easy to find bad policies that have killed hundreds of thousands of Americans, by looking at the raw data. We should do that, and not shy away from it. Even if people say we're "stupid" or "mind-killed" for doing so.

There's another problem: Those who benefit from the status quo benefit from labeling all political discussion as mind-killed.