Are questions about offensive claims allowed, so long as they otherwise meet Skeptics SE criteria?
For example, are questions about holocaust denial, denial of the Armenian genocide, 9/11 trutherism, blood libel, the Protocols of Zion, the ethnic background of past US presidents, and racial superiority/inferiority allowed? Even if the person asking them appears to believe in the claims?
Background: The meta post Closing of questions which don't clarify what they are asking for is advocating closing down a question asking whether race and penis size are correlated. The question and his comments complain that the question is vague, but also complain that the question is racist (the meta post was even tagged with "racism").